diff --git a/docs/language.html b/docs/language.html
index 7e372eac..7aa3889d 100644
--- a/docs/language.html
+++ b/docs/language.html
@@ -2,7 +2,7 @@
 <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
 <head>
 <meta charset="utf-8" />
-<meta name="generator" content="Docutils 0.22.2: https://docutils.sourceforge.io/" />
+<meta name="generator" content="Docutils 0.23: https://docutils.sourceforge.io/" />
 <meta name="viewport" content="width=device-width, initial-scale=1" />
 <title>Arcadia Studio OA / SA Language and Editing Contract</title>
 <style type="text/css">
@@ -806,11 +806,11 @@ references may be omitted and then mean <span class="docutils literal">none</spa
 These omissions are accepted in newly authored source 7, not only in schema-2
 compatibility input. Earlier schema admission of constructors and fields is
 still governed by its version rules.</p>
-<p>Canonical formatting writes the hydrated occurrence references and default
-<span class="docutils literal">message_kind</span>, <span class="docutils literal">reply_to</span> and <span class="docutils literal">values</span> explicitly. An absent
-<span class="docutils literal">operation</span> remains omitted in canonical output. Lossless no-op updates and
-unrelated name edits retain authored omissions; canonical formatting is a
-different operation. An admitted incomplete occurrence can still produce model
+<p>Canonical formatting omits optional occurrence references equal to <span class="docutils literal">none</span>,
+the default Asynchronous <span class="docutils literal">message_kind</span>, empty <span class="docutils literal">values</span>, and absent
+<span class="docutils literal">operation</span>. Required fields of a selected constructor remain present.
+Lossless updates retain unchanged explicit defaults and authored omissions;
+canonical formatting is a different operation. An admitted incomplete occurrence can still produce model
 checks requesting its missing work, exchange, lifeline or referenced scenario.</p>
 <table>
 <caption>Occurrence body constructors</caption>
@@ -1569,29 +1569,40 @@ has no explicit default, and does not convey ownership or deletion of the type.<
 <thead>
 <tr><th class="head"><p>Constructor</p></th>
 <th class="head"><p>Required fields</p></th>
+<th class="head"><p>Optional fields (omission value)</p></th>
 </tr>
 </thead>
 <tbody>
 <tr><td><p>Boolean</p></td>
 <td><p>None</p></td>
+<td><p>None</p></td>
 </tr>
 <tr><td><p>Integer</p></td>
-<td><p><span class="docutils literal">minimum</span>, <span class="docutils literal">maximum</span>: optional signed 64-bit integers</p></td>
+<td><p>None</p></td>
+<td><p><span class="docutils literal">minimum</span>, <span class="docutils literal">maximum</span>: signed 64-bit integers? (none)</p></td>
 </tr>
 <tr><td><p>Real</p></td>
-<td><p><span class="docutils literal">minimum</span>, <span class="docutils literal">maximum</span>: optional finite IEEE-754 binary64 values</p></td>
+<td><p>None</p></td>
+<td><p><span class="docutils literal">minimum</span>, <span class="docutils literal">maximum</span>: finite IEEE-754 binary64 values? (none)</p></td>
 </tr>
 <tr><td><p>String</p></td>
-<td><p><span class="docutils literal">minimum_length</span>: u32; <span class="docutils literal">maximum_length</span>: optional u32</p></td>
+<td><p><span class="docutils literal">minimum_length</span>: u32</p></td>
+<td><p><span class="docutils literal">maximum_length</span>: u32? (none)</p></td>
 </tr>
 <tr><td><p>Enumeration</p></td>
 <td><p><span class="docutils literal">literals</span>: unique nonempty, case-sensitive strings</p></td>
+<td><p>None</p></td>
 </tr>
 <tr><td><p>Record</p></td>
-<td><p><span class="docutils literal">supertype</span>: same-layer Record ref?</p></td>
+<td><p>None</p></td>
+<td><p><span class="docutils literal">supertype</span>: same-layer Record ref? (none)</p></td>
 </tr>
 </tbody>
 </table>
+<p>Optional fields may be absent or explicitly <span class="docutils literal">none</span>. Selected String and
+Enumeration constructors still require <span class="docutils literal">minimum_length</span> and <span class="docutils literal">literals</span>,
+respectively, including zero and an empty list. Selecting a constructor does
+not merge fields from the default String definition. Unknown fields reject.</p>
 <p>Bounds are inclusive and ordered; an absent bound means unbounded within the
 represented numeric domain. Integer comparisons MUST NOT convert to binary64.
 NaN, infinities, overflow and reversed bounds reject. String length counts Unicode
@@ -2439,10 +2450,27 @@ references, placements, artifacts, trace baselines, and ordered occurrences.
 Map order is irrelevant. The writer preserves signed coordinate zero and
 emits decimals that recover the original binary32 value.</p>
 <p>Canonical output uses LF, four-space indentation, explicit identities,
-defaults, and JSON-escaped strings. Elements are emitted in UUID order, then
+and JSON-escaped strings. It omits fields equal to the omission defaults of
+their actual declaration or selected constructor, as specified in the field
+tables. This includes an empty project description. It MUST NOT omit a required
+field merely because its value is zero, false, empty, or <span class="docutils literal">none</span>. Elements are emitted in UUID order, then
 relations; diagrams and their nodes follow, then artifacts, then traces.
 Fields use deterministic name order. Output ends with LF. Alias values come
 from the model, never from regenerating display names.</p>
+<p>Omission is context-sensitive: Scenario uses the source default MixedLegacy;
+BoundaryExchange and CommunicationMean have different orientation defaults;
+state declarations determine their state-kind discriminator. A nonempty or
+whitespace-only description remains exact. Present-empty optional strings or
+collections, unbounded multiplicity versus a finite default, selected operation
+intent, and negative coordinate zero remain distinct values. A nondefault
+geometry record retains all required coordinates or dimensions.</p>
+<p>Only specified optional fields inside selected constructors may be omitted.
+For example, Integer bounds and LegacyPortContract.interface may be absent;
+String.minimum_length, Signal.items, port-contract payload lists, and historical
+snapshot name/description fields remain required. A LegacyPortContract record
+still requires direction. Historical semantic baseline payloads are retained
+without generic empty/default pruning. Compact output MUST preserve every
+persistent model field after parsing, including these distinctions.</p>
 <p>Comments and input whitespace are lexical trivia to the canonical writer.
 Canonical export does not preserve them. The source-project editor and compiler
 preserve authored comments and whitespace on Apply while inserting missing
@@ -2484,11 +2512,19 @@ independent parent and child moves are resolved together. Leading whitespace
 adjusts to the destination scope; other token spelling remains authored.</p>
 <p>Updates MUST NOT canonicalize surviving declarations in full. Header, field and
 nested value positions are derived from the existing syntax parser. Unchanged
-fields retain their exact bytes, including field order, omitted defaults, number
+fields retain their exact bytes, including field order, explicit and omitted defaults, number
 and string spelling, comments, indentation and line endings. Changed literals and
 references replace only the required tokens; a reference with comments between
-<span class="docutils literal">&#64;</span> and its alias retains those comments. A previously omitted default is
-inserted only if its semantic value changes. New fields use the existing record's
+<span class="docutils literal">&#64;</span> and its alias retains those comments. A previously omitted field is
+inserted only when needed to express the requested value in its new declaration
+context. This includes an unchanged value whose omission default changes with
+the declaration kind. For example, changing BoundaryExchange to CommunicationMean
+while retaining orientation true requires <span class="docutils literal">oriented true;</span> if previously
+implicit. Unchanged explicit defaults MUST survive unrelated sibling edits,
+including persistence-serializer omissions such as <span class="docutils literal">operation none</span>,
+<span class="docutils literal">port_anchors []</span> and <span class="docutils literal">baseline.semantic none</span>. New fields and value fragments
+use compact generation while retaining required selected-constructor payloads.
+New fields use the existing record's
 indentation and line-ending style without reformatting its other fields.</p>
 <p>A constructor tag change retains shared nested fields in place. Removed fields,
 constructors and declarations remove syntax tokens, retaining their comments
@@ -2618,6 +2654,26 @@ placement move are different transactions. The UI MUST identify which operation
 will occur. Reparenting work must not silently change its performer. A computed
 parent summary must remain distinguishable from direct allocation. A collapse
 operation hides presentation detail without deleting the children.</p>
+<p>In an Allocation view, dragging an Activity or Function body MAY combine a
+performer change with diagram placement. The preview MUST identify the
+destination and preserve readable work and destination identity. Destination
+identity is shown outside the canvas, independently of explanatory or refusal
+text. The outlined target's hit region remains fixed throughout the gesture;
+feedback MUST NOT obscure the work or change its pointer-relative placement.
+A clean click selects without applying unrelated drafts. A refused work press
+with an unapplied property draft MUST preserve its text, caret and focused
+editor. An accepted drag is one atomic model/source/history transaction:
+semantic ownership and work identities are
+preserved; only leaf direct Allocation relations, their own retired routes and
+the affected view geometry change. Existing Allocation identities are retained
+on reassignment. Role realizations and assignments MUST NOT be silently changed. Uniform work groups
+may move their leaf responsibilities together; ambiguous or distributed groups
+and changes requiring collateral record edits MUST be refused with an explanation.
+Moving outside performer regions removes direct assignment only when the
+effective role responsibility is also absent. Releasing outside the viewport
+cancels the gesture. Explicit Arrange next drag applies geometry alone for one
+gesture. Refused and snapped no-op drops MUST NOT create history entries or
+discard Redo. Undo restores the exact source bundle and identities together.</p>
 <p>Applying a reachable source bundle is one model transaction. Graphical edits
 update its owning declarations through the source-preserving updater. Both
 paths validate their candidate and model/source equality before
@@ -2719,6 +2775,40 @@ leaving dangling references. Deleting a sequence does not delete the semantic
 exchanges it references. Cross-layer counterparts are not owned descendants.
 Text edits describe a complete candidate and must remove or repair dependencies
 explicitly before Apply succeeds.</p>
+<section id="focused-diagram-removal">
+<h3>8.1. Focused diagram removal</h3>
+<p>Delete is scoped to the focused diagram and the exact visible selection.
+Text fields retain their own Delete behavior; diagram shortcuts MUST NOT apply
+pending property, source or behavior drafts. Keyboard traversal retires diagram
+input admission before subsequent keys in the same event batch are processed.
+Active placement, creation, connection, reorder and pan gestures do not authorize
+removal. A stale document, revision, owner or selection MUST NOT redirect removal.</p>
+<p>For an explicit architecture or state placement, Delete removes that placement
+only. The semantic element and its placements in other views remain. Shift+Delete
+requests confirmed deletion of the semantic element, including when selection
+originated from Placement properties. A selected architecture route bend takes
+priority: plain Delete removes the bend without removing its edge.</p>
+<p>A visible relation with no placement, including a state action or internal
+transition row, uses confirmed relation deletion for either key. States and
+referenced Activity/Function definitions remain. Hidden or collapsed rows are
+not keyboard deletion targets.</p>
+<p>Process and scenario projections have no independent occurrence placements.
+Delete and Shift+Delete request confirmed removal of the selected occurrence,
+participant or maintained link. A link's endpoints and outbound reusable
+definitions are preserved. Removing a fragment or branch removes its owned
+subtree. Removing a scenario participant preserves its represented element and
+retains occurrences with affected participant references cleared; resulting
+incomplete references remain visible for repair. The modeled scenario Delete
+message is a separate domain event and is not this editing shortcut.</p>
+<p>A qualified selection inside an expanded reusable process MUST NOT silently
+delete the outer reference or shared definition item. The editor directs the
+user to open the definition or explicitly select the outer reference.</p>
+<p>Confirmation identifies the captured object and removal effect. Cancel and
+Escape preserve model, source and history. A confirmation token belongs to one
+dialog; changes to its document, revision, owner or selected identity invalidate
+it. Accepted deletion uses one ordinary model/source transaction, and Undo
+restores the exact complete accepted source bundle and model.</p>
+</section>
 </section>
 <section id="persistence-and-explicit-migration">
 <h2>9. Persistence and explicit migration</h2>
@@ -2793,8 +2883,9 @@ This compatibility applies equally to source and JSON. It adds explicit
 defaults without changing any prior identity, name, reference, order, geometry,
 artifact or trace field. The original V2 golden source/JSON in
 <span class="docutils literal"><span class="pre">crates/oa-core/tests/fixtures</span></span> MUST NOT be regenerated from the newer demo;
-they verify that every old persistent field survives. Canonical output writes
-the added defaults through explicit migration to the current schema 7.</p>
+they verify that every old persistent field survives. Canonical output uses
+the current schema 7 and omits values equal to its specified source defaults;
+parsing recovers the complete migrated model.</p>
 <p>The V2 adapter preserves every original identity, alias, prose, parent,
 placement, trace and artifact. Generic ports become Legacy with their original
 direction/interface record. Existing FE endpoint IDs remain unchanged. For
diff --git a/docs/language.rst b/docs/language.rst
index ad433733..4070ff79 100644
--- a/docs/language.rst
+++ b/docs/language.rst
@@ -171,11 +171,11 @@ These omissions are accepted in newly authored source 7, not only in schema-2
 compatibility input. Earlier schema admission of constructors and fields is
 still governed by its version rules.
 
-Canonical formatting writes the hydrated occurrence references and default
-``message_kind``, ``reply_to`` and ``values`` explicitly. An absent
-``operation`` remains omitted in canonical output. Lossless no-op updates and
-unrelated name edits retain authored omissions; canonical formatting is a
-different operation. An admitted incomplete occurrence can still produce model
+Canonical formatting omits optional occurrence references equal to ``none``,
+the default Asynchronous ``message_kind``, empty ``values``, and absent
+``operation``. Required fields of a selected constructor remain present.
+Lossless updates retain unchanged explicit defaults and authored omissions;
+canonical formatting is a different operation. An admitted incomplete occurrence can still produce model
 checks requesting its missing work, exchange, lifeline or referenced scenario.
 
 .. list-table:: Occurrence body constructors
@@ -933,18 +933,30 @@ DataTypeDefinition has exactly the following constructors:
 
    * - Constructor
      - Required fields
+     - Optional fields (omission value)
    * - Boolean
      - None
+     - None
    * - Integer
-     - ``minimum``, ``maximum``: optional signed 64-bit integers
+     - None
+     - ``minimum``, ``maximum``: signed 64-bit integers? (none)
    * - Real
-     - ``minimum``, ``maximum``: optional finite IEEE-754 binary64 values
+     - None
+     - ``minimum``, ``maximum``: finite IEEE-754 binary64 values? (none)
    * - String
-     - ``minimum_length``: u32; ``maximum_length``: optional u32
+     - ``minimum_length``: u32
+     - ``maximum_length``: u32? (none)
    * - Enumeration
      - ``literals``: unique nonempty, case-sensitive strings
+     - None
    * - Record
-     - ``supertype``: same-layer Record ref?
+     - None
+     - ``supertype``: same-layer Record ref? (none)
+
+Optional fields may be absent or explicitly ``none``. Selected String and
+Enumeration constructors still require ``minimum_length`` and ``literals``,
+respectively, including zero and an empty list. Selecting a constructor does
+not merge fields from the default String definition. Unknown fields reject.
 
 Bounds are inclusive and ordered; an absent bound means unbounded within the
 represented numeric domain. Integer comparisons MUST NOT convert to binary64.
@@ -1840,11 +1852,30 @@ Map order is irrelevant. The writer preserves signed coordinate zero and
 emits decimals that recover the original binary32 value.
 
 Canonical output uses LF, four-space indentation, explicit identities,
-defaults, and JSON-escaped strings. Elements are emitted in UUID order, then
+and JSON-escaped strings. It omits fields equal to the omission defaults of
+their actual declaration or selected constructor, as specified in the field
+tables. This includes an empty project description. It MUST NOT omit a required
+field merely because its value is zero, false, empty, or ``none``. Elements are emitted in UUID order, then
 relations; diagrams and their nodes follow, then artifacts, then traces.
 Fields use deterministic name order. Output ends with LF. Alias values come
 from the model, never from regenerating display names.
 
+Omission is context-sensitive: Scenario uses the source default MixedLegacy;
+BoundaryExchange and CommunicationMean have different orientation defaults;
+state declarations determine their state-kind discriminator. A nonempty or
+whitespace-only description remains exact. Present-empty optional strings or
+collections, unbounded multiplicity versus a finite default, selected operation
+intent, and negative coordinate zero remain distinct values. A nondefault
+geometry record retains all required coordinates or dimensions.
+
+Only specified optional fields inside selected constructors may be omitted.
+For example, Integer bounds and LegacyPortContract.interface may be absent;
+String.minimum_length, Signal.items, port-contract payload lists, and historical
+snapshot name/description fields remain required. A LegacyPortContract record
+still requires direction. Historical semantic baseline payloads are retained
+without generic empty/default pruning. Compact output MUST preserve every
+persistent model field after parsing, including these distinctions.
+
 Comments and input whitespace are lexical trivia to the canonical writer.
 Canonical export does not preserve them. The source-project editor and compiler
 preserve authored comments and whitespace on Apply while inserting missing
@@ -1890,11 +1921,19 @@ adjusts to the destination scope; other token spelling remains authored.
 
 Updates MUST NOT canonicalize surviving declarations in full. Header, field and
 nested value positions are derived from the existing syntax parser. Unchanged
-fields retain their exact bytes, including field order, omitted defaults, number
+fields retain their exact bytes, including field order, explicit and omitted defaults, number
 and string spelling, comments, indentation and line endings. Changed literals and
 references replace only the required tokens; a reference with comments between
-``@`` and its alias retains those comments. A previously omitted default is
-inserted only if its semantic value changes. New fields use the existing record's
+``@`` and its alias retains those comments. A previously omitted field is
+inserted only when needed to express the requested value in its new declaration
+context. This includes an unchanged value whose omission default changes with
+the declaration kind. For example, changing BoundaryExchange to CommunicationMean
+while retaining orientation true requires ``oriented true;`` if previously
+implicit. Unchanged explicit defaults MUST survive unrelated sibling edits,
+including persistence-serializer omissions such as ``operation none``,
+``port_anchors []`` and ``baseline.semantic none``. New fields and value fragments
+use compact generation while retaining required selected-constructor payloads.
+New fields use the existing record's
 indentation and line-ending style without reformatting its other fields.
 
 A constructor tag change retains shared nested fields in place. Removed fields,
@@ -2173,7 +2212,7 @@ Text edits describe a complete candidate and must remove or repair dependencies
 explicitly before Apply succeeds.
 
 8.1. Focused diagram removal
-~~~~~~~~~~~~~~~~~~~~~~~~~~~
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
 Delete is scoped to the focused diagram and the exact visible selection.
 Text fields retain their own Delete behavior; diagram shortcuts MUST NOT apply
@@ -2294,8 +2333,9 @@ This compatibility applies equally to source and JSON. It adds explicit
 defaults without changing any prior identity, name, reference, order, geometry,
 artifact or trace field. The original V2 golden source/JSON in
 ``crates/oa-core/tests/fixtures`` MUST NOT be regenerated from the newer demo;
-they verify that every old persistent field survives. Canonical output writes
-the added defaults through explicit migration to the current schema 7.
+they verify that every old persistent field survives. Canonical output uses
+the current schema 7 and omits values equal to its specified source defaults;
+parsing recovers the complete migrated model.
 
 The V2 adapter preserves every original identity, alias, prose, parent,
 placement, trace and artifact. Generic ports become Legacy with their original
diff --git a/examples/release1/oa/activities/activity_oa_restore_work.arcadia b/examples/release1/oa/activities/activity_oa_restore_work.arcadia
index 78781701..fb4a36e1 100644
--- a/examples/release1/oa/activities/activity_oa_restore_work.arcadia
+++ b/examples/release1/oa/activities/activity_oa_restore_work.arcadia
@@ -1,43 +1,34 @@
 oa_activity oa_restore_work "Restore safe pressure" id "1b91f8a7-0bdb-514e-b1cd-955658e09927" {
-    description "";
-    parent none;
 }
 
 oa_activity oa_assess "Assess pressure alarm" id "61f7bbfb-74a4-5540-9182-2583dfb27a49" {
-    description "";
     parent @oa_restore_work;
 }
 
 oa_activity oa_confirm "Confirm safe pressure" id "727c0b5c-8db6-5eb7-83d6-735519c5949f" {
-    description "";
     parent @oa_restore_work;
 }
 
 oa_activity oa_repair "Repair valve in the field" id "a21465af-05f3-5fb5-8983-de26932422fb" {
-    description "";
     parent @oa_restore_work;
 }
 
 oa_activity oa_reset "Reset valve remotely" id "d0c8be87-d238-503a-a549-7558a210507f" {
-    description "";
     parent @oa_restore_work;
 }
 
 capability_involvement oa_assessment_support "Capability involvement: Assess an alarm" id "ffdbfcd0-d423-5707-a880-0dfbe1400f72" {
-    description "";
     source @oa_assess;
     target @oa_triage;
 }
 
 interaction oa_repair_request "Request field repair" id "cf423ea2-8b2e-5a27-93d4-5e8542d9db8d" {
-    description "";
     items [@oa_repair_operation];
     source @oa_assess;
     target @oa_repair;
 }
 
 interaction oa_repair_report "Report repair result" id "b436d0b3-c824-5a96-af6b-2c269816d1cc" {
-    description "";
     items [@oa_repair_operation];
     source @oa_repair;
     target @oa_confirm;
diff --git a/examples/release1/oa/behavior/process_oa_assessment_procedure.arcadia b/examples/release1/oa/behavior/process_oa_assessment_procedure.arcadia
index 4ab5bda8..3824af89 100644
--- a/examples/release1/oa/behavior/process_oa_assessment_procedure.arcadia
+++ b/examples/release1/oa/behavior/process_oa_assessment_procedure.arcadia
@@ -1,6 +1,4 @@
 oa_process oa_assessment_procedure "Assess an alarm procedure" id "022d3cfa-bbaf-5e13-924a-8e55099b8745" {
-    description "";
-    parent none;
     steps [@oa_assessment_action];
 }
 
@@ -8,17 +6,12 @@ oa_occurrence oa_assessment_action "Assess pressure alarm" id "942975b8-0bef-5ae
     body {
         Action {
             action @oa_assess;
-            lifeline none;
         };
     };
-    description "";
     parent @oa_assessment_procedure;
-    postcondition "";
-    precondition "";
 }
 
 chain_involvement oa_assessment_delivery "Chain involvement: Assess an alarm" id "628cb4fc-fe63-5f6b-b364-6268f26b5740" {
-    description "";
     source @oa_assessment_procedure;
     target @oa_triage;
 }
diff --git a/examples/release1/oa/behavior/process_oa_field_procedure.arcadia b/examples/release1/oa/behavior/process_oa_field_procedure.arcadia
index d639717f..20502f8b 100644
--- a/examples/release1/oa/behavior/process_oa_field_procedure.arcadia
+++ b/examples/release1/oa/behavior/process_oa_field_procedure.arcadia
@@ -1,6 +1,4 @@
 oa_process oa_field_procedure "Field repair procedure" id "5d3af417-244c-54bb-9588-16daedda4e1f" {
-    description "";
-    parent none;
     steps [@oa_request_step, @oa_repair_step, @oa_report_step];
 }
 
@@ -8,59 +6,35 @@ oa_occurrence oa_repair_step "Repair the valve" id "c59432fe-6092-5ee0-908d-9dbf
     body {
         Action {
             action @oa_repair;
-            lifeline none;
         };
     };
-    description "";
     parent @oa_field_procedure;
-    postcondition "";
-    precondition "";
 }
 
 oa_occurrence oa_report_step "Report the measured result" id "df2fd3f8-6bc2-5380-a13f-36643ed35ac7" {
     body {
         Exchange {
             exchange @oa_repair_report;
-            message_kind Asynchronous;
-            receiver none;
-            reply_to none;
-            sender none;
-            values [];
         };
     };
-    description "";
     parent @oa_field_procedure;
-    postcondition "";
-    precondition "";
 }
 
 oa_occurrence oa_request_step "Request the field repair" id "5ba8079c-2dbe-5e98-ae82-2b60c6020a02" {
     body {
         Exchange {
             exchange @oa_repair_request;
-            message_kind Asynchronous;
-            receiver none;
-            reply_to none;
-            sender none;
-            values [];
         };
     };
-    description "";
     parent @oa_field_procedure;
-    postcondition "";
-    precondition "";
 }
 
 sequence_link oa_repair_then_report "Sequence link: Report the measured result" id "c8196d35-2168-5fef-8b03-ba0d139bc00f" {
-    description "";
-    guard "";
     source @oa_repair_step;
     target @oa_report_step;
 }
 
 sequence_link oa_request_then_repair "Sequence link: Repair the valve" id "3f54d890-4ca5-5e36-873b-abb5c92d578c" {
-    description "";
-    guard "";
     source @oa_request_step;
     target @oa_repair_step;
 }
diff --git a/examples/release1/oa/behavior/process_oa_response.arcadia b/examples/release1/oa/behavior/process_oa_response.arcadia
index b4cf4c29..4970a5a5 100644
--- a/examples/release1/oa/behavior/process_oa_response.arcadia
+++ b/examples/release1/oa/behavior/process_oa_response.arcadia
@@ -1,6 +1,4 @@
 oa_process oa_response "Handle a pressure alarm" id "58bae2b0-f560-50f2-818d-19091d22d18a" {
-    description "";
-    parent none;
     steps [@oa_assess_step, @oa_decision, @oa_reset_step, @oa_use_field, @oa_merge, @oa_confirm_step];
 }
 
@@ -10,23 +8,16 @@ oa_occurrence oa_assess_step "Assess the alarm" id "0b07b9ed-492d-57f6-b0b1-ce8a
             sequence @oa_assessment_procedure;
         };
     };
-    description "";
     parent @oa_response;
-    postcondition "";
-    precondition "";
 }
 
 oa_occurrence oa_confirm_step "Confirm safe pressure" id "e00594a3-6122-5a6b-b3c2-ecb5506c741d" {
     body {
         Action {
             action @oa_confirm;
-            lifeline none;
         };
     };
-    description "";
     parent @oa_response;
-    postcondition "";
-    precondition "";
 }
 
 oa_occurrence oa_decision "Can a remote reset safely recover pressure?" id "b280c6ca-e5f9-5424-a5c1-5676e01c2371" {
@@ -35,10 +26,7 @@ oa_occurrence oa_decision "Can a remote reset safely recover pressure?" id "b280
             kind Choice;
         };
     };
-    description "";
     parent @oa_response;
-    postcondition "";
-    precondition "";
 }
 
 oa_occurrence oa_merge "Recovery path completed" id "6b945a6d-6aa0-5dd3-96e6-2e8d757d167d" {
@@ -47,23 +35,16 @@ oa_occurrence oa_merge "Recovery path completed" id "6b945a6d-6aa0-5dd3-96e6-2e8
             kind Merge;
         };
     };
-    description "";
     parent @oa_response;
-    postcondition "";
-    precondition "";
 }
 
 oa_occurrence oa_reset_step "Try the authorized remote reset" id "d2026fc2-74a8-5e22-9942-ff3eb68a3677" {
     body {
         Action {
             action @oa_reset;
-            lifeline none;
         };
     };
-    description "";
     parent @oa_response;
-    postcondition "";
-    precondition "";
 }
 
 oa_occurrence oa_use_field "Use the field repair procedure" id "fc6763bf-a534-54bf-afcd-57ab285ff07d" {
@@ -72,56 +53,42 @@ oa_occurrence oa_use_field "Use the field repair procedure" id "fc6763bf-a534-54
             sequence @oa_field_procedure;
         };
     };
-    description "";
     parent @oa_response;
-    postcondition "";
-    precondition "";
 }
 
 sequence_link oa_assess_then_decide "Continue" id "109e2d6b-7e86-5934-93a5-fab56eced84e" {
-    description "";
-    guard "";
     source @oa_assess_step;
     target @oa_decision;
 }
 
 sequence_link oa_field_path "else" id "c1adbbd0-a762-5ee3-8b9a-5c18af377771" {
-    description "";
     guard "else";
     source @oa_decision;
     target @oa_use_field;
 }
 
 sequence_link oa_remote_path "remote reset is authorized" id "76218d89-68fd-531d-b35b-90c5b769a5ef" {
-    description "";
     guard "remote reset is authorized";
     source @oa_decision;
     target @oa_reset_step;
 }
 
 sequence_link oa_confirm_path "Continue" id "229ee94f-d147-50f6-9769-b5bd0c03a084" {
-    description "";
-    guard "";
     source @oa_merge;
     target @oa_confirm_step;
 }
 
 sequence_link oa_remote_merge "Continue" id "bac43d3b-910b-5bdc-be9b-f78cf973e1ed" {
-    description "";
-    guard "";
     source @oa_reset_step;
     target @oa_merge;
 }
 
 chain_involvement oa_response_delivery "Chain involvement: Restore a safe supply" id "c7c248f8-28b8-55be-9023-0991d44021e3" {
-    description "";
     source @oa_response;
     target @oa_restore;
 }
 
 sequence_link oa_field_merge "Continue" id "c8593670-8906-530f-b6a2-3ada77a9c219" {
-    description "";
-    guard "";
     source @oa_use_field;
     target @oa_merge;
 }
diff --git a/examples/release1/oa/behavior/scenario_oa_conversation.arcadia b/examples/release1/oa/behavior/scenario_oa_conversation.arcadia
index 89470e88..83c3f1d4 100644
--- a/examples/release1/oa/behavior/scenario_oa_conversation.arcadia
+++ b/examples/release1/oa/behavior/scenario_oa_conversation.arcadia
@@ -1,7 +1,5 @@
 oa_scenario oa_conversation "Repair request and measured reply" id "20472233-5ce6-5ffe-b4ad-0bdbccf3e423" {
     context @oa_restore;
-    description "";
-    parent none;
     postcondition "The controller has received the measured pressure after repair";
     precondition "A pressure alarm has been assessed";
     steps [@oa_call, @oa_reply];
@@ -14,23 +12,17 @@ oa_occurrence oa_call "Request valve repair" id "b97437c6-cd7a-5a05-b537-b30a17d
             exchange @oa_contact;
             message_kind Call;
             receiver @oa_responder;
-            reply_to none;
             sender @oa_caller;
             values [{
                 expression "420.0";
                 field @oa_pressure_parameter;
-                path [];
             }];
         };
     };
-    description "";
     parent @oa_conversation;
-    postcondition "";
-    precondition "";
 }
 
 oa_lifeline oa_caller "Controller" id "41859a65-ded2-547b-ab03-14e2fa740cf9" {
-    description "";
     parent @oa_conversation;
     represented @oa_control;
 }
@@ -46,18 +38,13 @@ oa_occurrence oa_reply "Return pressure after repair" id "cc2d497a-fd15-5455-9ee
             values [{
                 expression "320.0";
                 field @oa_pressure_parameter;
-                path [];
             }];
         };
     };
-    description "";
     parent @oa_conversation;
-    postcondition "";
-    precondition "";
 }
 
 oa_lifeline oa_responder "Technician" id "fc81c5f0-0442-5b88-992b-e5b10f351c59" {
-    description "";
     parent @oa_conversation;
     represented @oa_technician;
 }
diff --git a/examples/release1/oa/behavior/scenario_oa_full_scenario.arcadia b/examples/release1/oa/behavior/scenario_oa_full_scenario.arcadia
index 33c9aad1..1ff7d7e4 100644
--- a/examples/release1/oa/behavior/scenario_oa_full_scenario.arcadia
+++ b/examples/release1/oa/behavior/scenario_oa_full_scenario.arcadia
@@ -1,7 +1,5 @@
 oa_scenario oa_full_scenario "Restore supply through field repair" id "d6f881a4-95da-54e9-ad97-1b8965532629" {
     context @oa_restore;
-    description "";
-    parent none;
     postcondition "The controller has received the measured pressure after repair";
     precondition "A pressure alarm has been assessed";
     steps [@oa_use_conversation];
@@ -9,13 +7,11 @@ oa_scenario oa_full_scenario "Restore supply through field repair" id "d6f881a4-
 }
 
 oa_lifeline oa_outer_controller "Controller" id "2011b3ac-614b-5a47-8891-7ff81965f425" {
-    description "";
     parent @oa_full_scenario;
     represented @oa_control;
 }
 
 oa_lifeline oa_outer_technician "Technician" id "fffff882-78fd-5415-928d-c1ef7fac6576" {
-    description "";
     parent @oa_full_scenario;
     represented @oa_technician;
 }
@@ -33,9 +29,6 @@ oa_occurrence oa_use_conversation "Use the reviewed repair conversation" id "9ff
             scenario @oa_conversation;
         };
     };
-    description "";
     parent @oa_full_scenario;
-    postcondition "";
-    precondition "";
 }
 
diff --git a/examples/release1/oa/behavior/state_machine_oa_monitor.arcadia b/examples/release1/oa/behavior/state_machine_oa_monitor.arcadia
index aeaa90cf..5ccabfc4 100644
--- a/examples/release1/oa/behavior/state_machine_oa_monitor.arcadia
+++ b/examples/release1/oa/behavior/state_machine_oa_monitor.arcadia
@@ -1,80 +1,43 @@
 oa_state_machine oa_monitor "Pressure supervision" id "1970608f-85d1-5234-ac86-5e2b0df27dc3" {
-    description "";
     parent @oa_control;
 }
 
 oa_region oa_monitor_region "Supervision cycle" id "8412e9c6-96fe-5ed6-a903-1d37ec3c3bf7" {
-    description "";
     parent @oa_monitor;
 }
 
 oa_initial oa_monitor_initial "Start" id "a7ffb869-9dde-5e76-b276-c719c5c143a9" {
-    description "";
-    do_activity "";
-    entry "";
-    exit "";
-    kind Initial;
     parent @oa_monitor_region;
 }
 
 oa_state oa_monitoring "Monitoring" id "6cbde0d8-9f5f-510a-a8c1-e29cb99ad4ae" {
-    description "";
-    do_activity "";
-    entry "";
-    exit "";
-    kind State;
     parent @oa_monitor_region;
 }
 
 oa_state oa_waiting "Awaiting repair" id "58c15833-6e75-523a-b57f-a88f19f6d672" {
-    description "";
-    do_activity "";
-    entry "";
-    exit "";
-    kind State;
     parent @oa_monitor_region;
 }
 
 state_transition oa_start_monitoring "State transition: Monitoring" id "2b00270c-79a5-52a5-af96-33346bea531b" {
-    description "";
-    effect "";
-    effects [];
-    guard "";
     source @oa_monitor_initial;
     target @oa_monitoring;
-    transition_kind External;
-    trigger "";
-    triggers [];
 }
 
 state_transition oa_alarm_transition "State transition: Awaiting repair" id "fbde9d5e-c7e9-55db-a2be-497345c491b3" {
-    description "";
-    effect "";
-    effects [];
-    guard "";
     source @oa_monitoring;
     target @oa_waiting;
-    transition_kind External;
-    trigger "";
     triggers [@oa_high_pressure];
 }
 
 state_action oa_assess_on_entry "Assess when repair is needed" id "7fa37e63-db65-5aa7-88f2-31ff4347a787" {
-    description "";
     phase Entry;
     source @oa_waiting;
     target @oa_assess;
 }
 
 state_transition oa_normal_transition "State transition: Monitoring" id "21fe5e8e-cbc2-5dad-b3e8-1df46e167d97" {
-    description "";
-    effect "";
-    effects [];
     guard "repair confirmed and pressure is safe";
     source @oa_waiting;
     target @oa_monitoring;
-    transition_kind External;
-    trigger "";
-    triggers [];
 }
 
diff --git a/examples/release1/oa/capabilities.arcadia b/examples/release1/oa/capabilities.arcadia
index 77c2ab08..d7c2acda 100644
--- a/examples/release1/oa/capabilities.arcadia
+++ b/examples/release1/oa/capabilities.arcadia
@@ -1,26 +1,18 @@
 oa_mission oa_mission "Maintain safe water supply" id "c9c61f50-06e0-5d17-973d-dcc57cd5cc90" {
-    description "";
-    parent none;
 }
 
 oa_capability oa_restore "Restore a safe supply" id "3dfee23a-148b-5cec-ad2d-b774e84ea5bb" {
-    description "";
-    parent none;
 }
 
 oa_capability oa_triage "Assess an alarm" id "6a30b763-cc51-546d-907f-5c63657cfd03" {
-    description "";
-    parent none;
 }
 
 mission_capability oa_mission_delivery "Mission capability: Restore a safe supply" id "1f8b1898-65f6-5360-99cf-b78a71bd50ec" {
-    description "";
     source @oa_mission;
     target @oa_restore;
 }
 
 capability_include oa_include_triage "Capability include: Assess an alarm" id "e21d9a54-ae8e-5618-a4f8-67ee22b92638" {
-    description "";
     source @oa_restore;
     target @oa_triage;
 }
diff --git a/examples/release1/oa/model.arcadia b/examples/release1/oa/model.arcadia
index b3f4a60a..f2308e94 100644
--- a/examples/release1/oa/model.arcadia
+++ b/examples/release1/oa/model.arcadia
@@ -1,8 +1,6 @@
 oa_exchange_category oa_contact_category "Field contact" id "19bd3a3a-4d0c-56d5-bf50-a6b43fd81771" {
-    description "";
     exchanges [@oa_contact];
     family "Participant";
-    parent none;
 }
 
 oa_event oa_high_pressure "Pressure alarm detected" id "65d6b8d6-271a-5c84-8b42-abbe310c955e" {
@@ -11,14 +9,9 @@ oa_event oa_high_pressure "Pressure alarm detected" id "65d6b8d6-271a-5c84-8b42-
             expression "measured_pressure > operating_limit";
         };
     };
-    description "";
-    parent none;
 }
 
 oa_exchange_category oa_repair_traffic "Repair work exchanges" id "9349b353-53f2-56f8-b571-a05b09335cdf" {
-    description "";
     exchanges [@oa_repair_request, @oa_repair_report];
-    family "Work";
-    parent none;
 }
 
diff --git a/examples/release1/oa/participants.arcadia b/examples/release1/oa/participants.arcadia
index ed901190..7edbab44 100644
--- a/examples/release1/oa/participants.arcadia
+++ b/examples/release1/oa/participants.arcadia
@@ -1,59 +1,46 @@
 oa_entity oa_control "Control room" id "32aa9940-df6e-5a12-b9bd-6337e2d2ed22" {
-    description "";
-    parent none;
 }
 
 oa_actor oa_technician "Field technician" id "e07c3952-4a1a-5cc7-b7d5-03a01101ce49" {
-    description "";
-    parent none;
 }
 
 allocation oa_assess_allocation "Allocation: Assess pressure alarm" id "594c61cd-94e0-5c07-890d-edfd520d7df9" {
-    description "";
     source @oa_control;
     target @oa_assess;
 }
 
 allocation oa_confirm_allocation "Allocation: Confirm safe pressure" id "bfd4326e-ea65-5269-b5e6-e063a355d1e9" {
-    description "";
     source @oa_control;
     target @oa_confirm;
 }
 
 communication_mean oa_contact "Technician service conversation" id "27b47887-baf0-518b-bf87-f5acbf7d0b93" {
-    description "";
     items [@oa_repair_operation];
-    oriented false;
     source @oa_control;
     target @oa_technician;
 }
 
 exchange_allocation oa_report_carriage "Exchange allocation: Report repair result" id "4549d3fa-5ab9-52a9-b4f9-3a78fc9d625a" {
-    description "";
     source @oa_contact;
     target @oa_repair_report;
 }
 
 exchange_allocation oa_request_carriage "Exchange allocation: Request field repair" id "094b888c-450c-5c4f-971a-7d75db059574" {
-    description "";
     source @oa_contact;
     target @oa_repair_request;
 }
 
 mission_involvement oa_mission_participant "Mission involvement: Maintain safe water supply" id "0c4c9e58-ff32-5c00-b82a-d408a4be0183" {
-    description "";
     source @oa_control;
     target @oa_mission;
 }
 
 allocation oa_reset_allocation "Allocation: Reset valve remotely" id "1853df1f-30f4-5b1a-baac-2dcaf73c7b3a" {
-    description "";
     source @oa_control;
     target @oa_reset;
 }
 
 allocation oa_repair_allocation "Allocation: Repair valve in the field" id "ae53f363-0dec-5a7c-9afd-8fcd1b778ab2" {
-    description "";
     source @oa_technician;
     target @oa_repair;
 }
diff --git a/examples/release1/oa/types.arcadia b/examples/release1/oa/types.arcadia
index c285895b..c4597556 100644
--- a/examples/release1/oa/types.arcadia
+++ b/examples/release1/oa/types.arcadia
@@ -1,35 +1,22 @@
 oa_data_type oa_pressure "Measured pressure" id "e7824764-5db9-5384-8198-2fbaea2b10b2" {
-    default none;
     definition {
         Real {
             maximum 600.0;
             minimum 0.0;
         };
     };
-    description "";
-    parent none;
     unit "kPa";
 }
 
 oa_exchange_item oa_repair_operation "Valve repair" id "d736c7d6-d369-550a-8ba4-dae223e40bb3" {
-    description "";
-    kind Information;
     mechanism Operation;
-    parent none;
-    supertype none;
 }
 
 oa_data_field oa_pressure_parameter "Pressure before / after repair" id "8bc6d0a4-3e87-559b-8bd7-1b679a2db5b7" {
-    default none;
-    description "";
     direction InOut;
-    maximum 1;
-    minimum 1;
     parent @oa_repair_operation;
-    storage Value;
     type_ref {
         Named @oa_pressure;
     };
-    unit "";
 }
 
diff --git a/examples/release1/sa/behavior/process_sa_assessment_procedure.arcadia b/examples/release1/sa/behavior/process_sa_assessment_procedure.arcadia
index ff30c34f..c368828e 100644
--- a/examples/release1/sa/behavior/process_sa_assessment_procedure.arcadia
+++ b/examples/release1/sa/behavior/process_sa_assessment_procedure.arcadia
@@ -1,6 +1,4 @@
 sa_functional_chain sa_assessment_procedure "Assess an alarm procedure" id "acd5a018-f559-5298-a40d-1cf6e1353e74" {
-    description "";
-    parent none;
     steps [@sa_assessment_action];
 }
 
@@ -8,17 +6,12 @@ sa_occurrence sa_assessment_action "Assess pressure alarm" id "bae5b192-5b8e-51c
     body {
         Action {
             action @sa_assess;
-            lifeline none;
         };
     };
-    description "";
     parent @sa_assessment_procedure;
-    postcondition "";
-    precondition "";
 }
 
 chain_involvement sa_assessment_delivery "Chain involvement: Assess an alarm" id "a6d5a6be-fa6e-5fa0-a309-08e87ba40c57" {
-    description "";
     source @sa_assessment_procedure;
     target @sa_triage;
 }
diff --git a/examples/release1/sa/behavior/process_sa_field_procedure.arcadia b/examples/release1/sa/behavior/process_sa_field_procedure.arcadia
index b6de2a32..04ff2eee 100644
--- a/examples/release1/sa/behavior/process_sa_field_procedure.arcadia
+++ b/examples/release1/sa/behavior/process_sa_field_procedure.arcadia
@@ -1,6 +1,4 @@
 sa_functional_chain sa_field_procedure "Field repair procedure" id "93eb6479-54e9-59cb-ac7b-16912347bfc0" {
-    description "";
-    parent none;
     steps [@sa_request_step, @sa_repair_step, @sa_report_step];
 }
 
@@ -8,59 +6,35 @@ sa_occurrence sa_repair_step "Repair the valve" id "0f195fea-3493-5ebd-966d-da9e
     body {
         Action {
             action @sa_repair;
-            lifeline none;
         };
     };
-    description "";
     parent @sa_field_procedure;
-    postcondition "";
-    precondition "";
 }
 
 sa_occurrence sa_report_step "Report the measured result" id "ea32e4ec-8bdc-57ea-8a90-7b09ba4f0eac" {
     body {
         Exchange {
             exchange @sa_repair_report;
-            message_kind Asynchronous;
-            receiver none;
-            reply_to none;
-            sender none;
-            values [];
         };
     };
-    description "";
     parent @sa_field_procedure;
-    postcondition "";
-    precondition "";
 }
 
 sa_occurrence sa_request_step "Request the field repair" id "40d94322-baa2-5c81-b261-ff47cdc33782" {
     body {
         Exchange {
             exchange @sa_repair_request;
-            message_kind Asynchronous;
-            receiver none;
-            reply_to none;
-            sender none;
-            values [];
         };
     };
-    description "";
     parent @sa_field_procedure;
-    postcondition "";
-    precondition "";
 }
 
 sequence_link sa_repair_then_report "Sequence link: Report the measured result" id "7fb30b1d-195c-5f0e-a19c-a536f519a899" {
-    description "";
-    guard "";
     source @sa_repair_step;
     target @sa_report_step;
 }
 
 sequence_link sa_request_then_repair "Sequence link: Repair the valve" id "6a6d968f-26d6-5dbb-b721-5a27d362779a" {
-    description "";
-    guard "";
     source @sa_request_step;
     target @sa_repair_step;
 }
diff --git a/examples/release1/sa/behavior/process_sa_response.arcadia b/examples/release1/sa/behavior/process_sa_response.arcadia
index 241fb132..d56a692d 100644
--- a/examples/release1/sa/behavior/process_sa_response.arcadia
+++ b/examples/release1/sa/behavior/process_sa_response.arcadia
@@ -1,6 +1,4 @@
 sa_functional_chain sa_response "Handle a pressure alarm" id "5139ce73-56fd-5875-ba3a-e569fc890231" {
-    description "";
-    parent none;
     steps [@sa_assess_step, @sa_decision, @sa_reset_step, @sa_use_field, @sa_merge, @sa_confirm_step];
 }
 
@@ -10,23 +8,16 @@ sa_occurrence sa_assess_step "Assess the alarm" id "9024243c-ccc1-5edb-8477-2aa1
             sequence @sa_assessment_procedure;
         };
     };
-    description "";
     parent @sa_response;
-    postcondition "";
-    precondition "";
 }
 
 sa_occurrence sa_confirm_step "Confirm safe pressure" id "47bec4f9-d6d0-5ed1-adca-fa0d960dc416" {
     body {
         Action {
             action @sa_confirm;
-            lifeline none;
         };
     };
-    description "";
     parent @sa_response;
-    postcondition "";
-    precondition "";
 }
 
 sa_occurrence sa_decision "Can a remote reset safely recover pressure?" id "30c8fad9-a49b-5692-9542-3148e76afd7b" {
@@ -35,10 +26,7 @@ sa_occurrence sa_decision "Can a remote reset safely recover pressure?" id "30c8
             kind Choice;
         };
     };
-    description "";
     parent @sa_response;
-    postcondition "";
-    precondition "";
 }
 
 sa_occurrence sa_merge "Recovery path completed" id "4ed0dd9d-c9e0-5652-aedf-5f0ab4328a07" {
@@ -47,23 +35,16 @@ sa_occurrence sa_merge "Recovery path completed" id "4ed0dd9d-c9e0-5652-aedf-5f0
             kind Merge;
         };
     };
-    description "";
     parent @sa_response;
-    postcondition "";
-    precondition "";
 }
 
 sa_occurrence sa_reset_step "Try the authorized remote reset" id "bfa2ef0b-ce68-55c2-a9e5-31ea8a74fce6" {
     body {
         Action {
             action @sa_reset;
-            lifeline none;
         };
     };
-    description "";
     parent @sa_response;
-    postcondition "";
-    precondition "";
 }
 
 sa_occurrence sa_use_field "Use the field repair procedure" id "d5e61c5d-510b-5091-a878-da46f3a9e152" {
@@ -72,56 +53,42 @@ sa_occurrence sa_use_field "Use the field repair procedure" id "d5e61c5d-510b-50
             sequence @sa_field_procedure;
         };
     };
-    description "";
     parent @sa_response;
-    postcondition "";
-    precondition "";
 }
 
 sequence_link sa_assess_then_decide "Continue" id "9d4a131f-36ad-5125-b21f-c3dd033b8c82" {
-    description "";
-    guard "";
     source @sa_assess_step;
     target @sa_decision;
 }
 
 sequence_link sa_field_path "else" id "1bbd5957-1173-51d8-97e3-ba4f084227ae" {
-    description "";
     guard "else";
     source @sa_decision;
     target @sa_use_field;
 }
 
 sequence_link sa_remote_path "remote reset is authorized" id "d8b6710a-e713-5979-934f-e5ca7d155bb4" {
-    description "";
     guard "remote reset is authorized";
     source @sa_decision;
     target @sa_reset_step;
 }
 
 sequence_link sa_confirm_path "Continue" id "1e738f27-a3a1-526d-b330-6384088b9689" {
-    description "";
-    guard "";
     source @sa_merge;
     target @sa_confirm_step;
 }
 
 sequence_link sa_remote_merge "Continue" id "e5279265-8eac-52e8-98dc-571b20475e1f" {
-    description "";
-    guard "";
     source @sa_reset_step;
     target @sa_merge;
 }
 
 chain_involvement sa_response_delivery "Chain involvement: Restore a safe supply" id "66efc484-53c7-51a3-89e9-422429344b38" {
-    description "";
     source @sa_response;
     target @sa_restore;
 }
 
 sequence_link sa_field_merge "Continue" id "0f6ac3fb-4ad6-581e-ad14-336472072d5e" {
-    description "";
-    guard "";
     source @sa_use_field;
     target @sa_merge;
 }
diff --git a/examples/release1/sa/behavior/scenario_sa_conversation.arcadia b/examples/release1/sa/behavior/scenario_sa_conversation.arcadia
index 4e324730..8f19ca06 100644
--- a/examples/release1/sa/behavior/scenario_sa_conversation.arcadia
+++ b/examples/release1/sa/behavior/scenario_sa_conversation.arcadia
@@ -1,7 +1,5 @@
 sa_scenario sa_conversation "Repair request and measured reply" id "730b27ca-b039-5a3b-8dc6-03418f9061b3" {
     context @sa_restore;
-    description "";
-    parent none;
     postcondition "The controller has received the measured pressure after repair";
     precondition "A pressure alarm has been assessed";
     steps [@sa_call, @sa_reply];
@@ -14,23 +12,17 @@ sa_occurrence sa_call "Request valve repair" id "8bab4783-a098-5984-9e36-493957c
             exchange @sa_contact;
             message_kind Call;
             receiver @sa_responder;
-            reply_to none;
             sender @sa_caller;
             values [{
                 expression "420.0";
                 field @sa_pressure_parameter;
-                path [];
             }];
         };
     };
-    description "";
     parent @sa_conversation;
-    postcondition "";
-    precondition "";
 }
 
 sa_lifeline sa_caller "Controller" id "98c61788-2fee-51f4-8cf9-de48e8c70e9e" {
-    description "";
     parent @sa_conversation;
     represented @sa_control;
 }
@@ -46,18 +38,13 @@ sa_occurrence sa_reply "Return pressure after repair" id "4e1c0a56-ce80-5f13-a93
             values [{
                 expression "320.0";
                 field @sa_pressure_parameter;
-                path [];
             }];
         };
     };
-    description "";
     parent @sa_conversation;
-    postcondition "";
-    precondition "";
 }
 
 sa_lifeline sa_responder "Technician" id "6249b54a-e396-5338-82b9-89266c55670d" {
-    description "";
     parent @sa_conversation;
     represented @sa_technician;
 }
diff --git a/examples/release1/sa/behavior/scenario_sa_full_scenario.arcadia b/examples/release1/sa/behavior/scenario_sa_full_scenario.arcadia
index b88e5d12..96bbfa55 100644
--- a/examples/release1/sa/behavior/scenario_sa_full_scenario.arcadia
+++ b/examples/release1/sa/behavior/scenario_sa_full_scenario.arcadia
@@ -1,7 +1,5 @@
 sa_scenario sa_full_scenario "Restore supply through field repair" id "f746a1cd-ff9f-55c0-b325-01c03d2f4fae" {
     context @sa_restore;
-    description "";
-    parent none;
     postcondition "The controller has received the measured pressure after repair";
     precondition "A pressure alarm has been assessed";
     steps [@sa_use_conversation];
@@ -9,13 +7,11 @@ sa_scenario sa_full_scenario "Restore supply through field repair" id "f746a1cd-
 }
 
 sa_lifeline sa_outer_controller "Controller" id "1edfcf9e-9bfa-51f1-80d5-62b8fd8bb023" {
-    description "";
     parent @sa_full_scenario;
     represented @sa_control;
 }
 
 sa_lifeline sa_outer_technician "Technician" id "155e4fe4-9e3b-5f4e-b886-28abcc3f086b" {
-    description "";
     parent @sa_full_scenario;
     represented @sa_technician;
 }
@@ -33,9 +29,6 @@ sa_occurrence sa_use_conversation "Use the reviewed repair conversation" id "1c9
             scenario @sa_conversation;
         };
     };
-    description "";
     parent @sa_full_scenario;
-    postcondition "";
-    precondition "";
 }
 
diff --git a/examples/release1/sa/behavior/state_machine_sa_monitor.arcadia b/examples/release1/sa/behavior/state_machine_sa_monitor.arcadia
index 46949f1b..3f2dc533 100644
--- a/examples/release1/sa/behavior/state_machine_sa_monitor.arcadia
+++ b/examples/release1/sa/behavior/state_machine_sa_monitor.arcadia
@@ -1,80 +1,43 @@
 sa_state_machine sa_monitor "Pressure supervision" id "132b3f28-3f88-5327-9868-8c8b645ed412" {
-    description "";
     parent @sa_control;
 }
 
 sa_region sa_monitor_region "Supervision cycle" id "3ab11e24-4140-58fc-b3fa-da5f51c7fe2c" {
-    description "";
     parent @sa_monitor;
 }
 
 sa_initial sa_monitor_initial "Start" id "57eb5348-14d8-560e-996a-8dbf993243e2" {
-    description "";
-    do_activity "";
-    entry "";
-    exit "";
-    kind Initial;
     parent @sa_monitor_region;
 }
 
 sa_state sa_monitoring "Monitoring" id "8af21f9b-c21e-5aae-af0d-0958840f6655" {
-    description "";
-    do_activity "";
-    entry "";
-    exit "";
-    kind State;
     parent @sa_monitor_region;
 }
 
 sa_state sa_waiting "Awaiting repair" id "a6bb10b1-f1e5-5b31-8afd-5bad5a7b6c37" {
-    description "";
-    do_activity "";
-    entry "";
-    exit "";
-    kind State;
     parent @sa_monitor_region;
 }
 
 state_transition sa_start_monitoring "State transition: Monitoring" id "47730532-0372-5cc5-9d6d-0b8953aebdd8" {
-    description "";
-    effect "";
-    effects [];
-    guard "";
     source @sa_monitor_initial;
     target @sa_monitoring;
-    transition_kind External;
-    trigger "";
-    triggers [];
 }
 
 state_transition sa_alarm_transition "State transition: Awaiting repair" id "13c3bfa4-9254-5ab2-b96f-f65f402adf81" {
-    description "";
-    effect "";
-    effects [];
-    guard "";
     source @sa_monitoring;
     target @sa_waiting;
-    transition_kind External;
-    trigger "";
     triggers [@sa_high_pressure];
 }
 
 state_action sa_assess_on_entry "Assess when repair is needed" id "a887f96a-37cb-5891-8070-011fa276e5b5" {
-    description "";
     phase Entry;
     source @sa_waiting;
     target @sa_assess;
 }
 
 state_transition sa_normal_transition "State transition: Monitoring" id "6e2c1b47-764c-577a-b325-ff66dd2a2768" {
-    description "";
-    effect "";
-    effects [];
     guard "repair confirmed and pressure is safe";
     source @sa_waiting;
     target @sa_monitoring;
-    transition_kind External;
-    trigger "";
-    triggers [];
 }
 
diff --git a/examples/release1/sa/capabilities.arcadia b/examples/release1/sa/capabilities.arcadia
index 4b5c4210..464e751d 100644
--- a/examples/release1/sa/capabilities.arcadia
+++ b/examples/release1/sa/capabilities.arcadia
@@ -1,26 +1,18 @@
 sa_mission sa_mission "Maintain safe water supply" id "5ad034b1-084d-5273-9e70-971671766132" {
-    description "";
-    parent none;
 }
 
 sa_capability sa_restore "Restore a safe supply" id "81259051-370a-512d-a3b5-6420a6f933b6" {
-    description "";
-    parent none;
 }
 
 sa_capability sa_triage "Assess an alarm" id "bad8fa7c-f634-55fd-98d3-e1eb2da05d8f" {
-    description "";
-    parent none;
 }
 
 mission_capability sa_mission_delivery "Mission capability: Restore a safe supply" id "a0902e0f-3d18-576a-9aca-975a136dfdd7" {
-    description "";
     source @sa_mission;
     target @sa_restore;
 }
 
 capability_include sa_include_triage "Capability include: Assess an alarm" id "f3fe7690-734a-5877-8b57-a6599a4033c4" {
-    description "";
     source @sa_restore;
     target @sa_triage;
 }
diff --git a/examples/release1/sa/functions/function_sa_audit_thresholds.arcadia b/examples/release1/sa/functions/function_sa_audit_thresholds.arcadia
index 2ec039aa..a9c49d2b 100644
--- a/examples/release1/sa/functions/function_sa_audit_thresholds.arcadia
+++ b/examples/release1/sa/functions/function_sa_audit_thresholds.arcadia
@@ -1,5 +1,4 @@
 sa_function sa_audit_thresholds "Audit pressure thresholds" id "4149a872-3440-59de-9879-8981e78d27ab" {
     description "Deliberately unfinished: assigned to the service, but no behavior context yet. Model checks should expose this one work_without_behavior_context warning.";
-    parent none;
 }
 
diff --git a/examples/release1/sa/functions/function_sa_restore_work.arcadia b/examples/release1/sa/functions/function_sa_restore_work.arcadia
index 772ec0f1..7a84b35b 100644
--- a/examples/release1/sa/functions/function_sa_restore_work.arcadia
+++ b/examples/release1/sa/functions/function_sa_restore_work.arcadia
@@ -1,10 +1,7 @@
 sa_function sa_restore_work "Restore safe pressure" id "58867e7d-916e-5ebc-9e4c-8dbed1314be3" {
-    description "";
-    parent none;
 }
 
 sa_function sa_assess "Assess pressure alarm" id "dddae020-a444-5d48-acc8-139d2696a672" {
-    description "";
     parent @sa_restore_work;
 }
 
@@ -14,13 +11,10 @@ sa_port sa_repair_request_out "Request field repair output" id "24a6850e-b819-57
             outgoing_items [@sa_repair_operation];
         };
     };
-    description "";
-    legacy none;
     parent @sa_assess;
 }
 
 sa_function sa_confirm "Confirm safe pressure" id "d75eb3fa-a27d-52d5-8782-8b342b3865f6" {
-    description "";
     parent @sa_restore_work;
 }
 
@@ -30,13 +24,10 @@ sa_port sa_repair_report_in "Report repair result input" id "391af7c4-b07d-53a7-
             incoming_items [@sa_repair_operation];
         };
     };
-    description "";
-    legacy none;
     parent @sa_confirm;
 }
 
 sa_function sa_repair "Repair valve in the field" id "9497e10f-04c4-5586-8738-2464a6f00bd4" {
-    description "";
     parent @sa_restore_work;
 }
 
@@ -46,8 +37,6 @@ sa_port sa_repair_report_out "Report repair result output" id "994faed7-dbc8-5b9
             outgoing_items [@sa_repair_operation];
         };
     };
-    description "";
-    legacy none;
     parent @sa_repair;
 }
 
@@ -57,24 +46,19 @@ sa_port sa_repair_request_in "Request field repair input" id "d2113fb0-a531-54ef
             incoming_items [@sa_repair_operation];
         };
     };
-    description "";
-    legacy none;
     parent @sa_repair;
 }
 
 sa_function sa_reset "Reset valve remotely" id "09342ccb-044b-5483-ac58-87dc3cf7831c" {
-    description "";
     parent @sa_restore_work;
 }
 
 capability_involvement sa_assessment_support "Capability involvement: Assess an alarm" id "93eaad8d-83b7-5980-b9bb-86c9e3f31da4" {
-    description "";
     source @sa_assess;
     target @sa_triage;
 }
 
 functional_exchange sa_repair_request "Request field repair" id "93474111-f23e-56c1-b61b-b7c2396b91bd" {
-    description "";
     items [@sa_repair_operation];
     source @sa_assess;
     source_port @sa_repair_request_out;
@@ -83,7 +67,6 @@ functional_exchange sa_repair_request "Request field repair" id "93474111-f23e-5
 }
 
 functional_exchange sa_repair_report "Report repair result" id "684eadc3-e670-5779-a60f-bbc9a5bfb062" {
-    description "";
     items [@sa_repair_operation];
     source @sa_repair;
     source_port @sa_repair_report_out;
diff --git a/examples/release1/sa/model.arcadia b/examples/release1/sa/model.arcadia
index 0856d908..47f9ff54 100644
--- a/examples/release1/sa/model.arcadia
+++ b/examples/release1/sa/model.arcadia
@@ -1,8 +1,6 @@
 sa_exchange_category sa_contact_category "Field contact" id "781cbe75-410f-5cc5-aeb8-a43491f77b99" {
-    description "";
     exchanges [@sa_contact];
     family "Participant";
-    parent none;
 }
 
 sa_event sa_high_pressure "Pressure alarm detected" id "01490fa8-2f01-5ac8-9722-d55d45414379" {
@@ -11,14 +9,9 @@ sa_event sa_high_pressure "Pressure alarm detected" id "01490fa8-2f01-5ac8-9722-
             expression "measured_pressure > operating_limit";
         };
     };
-    description "";
-    parent none;
 }
 
 sa_exchange_category sa_repair_traffic "Repair work exchanges" id "a9a47e48-100c-57a8-95f0-7fe24da94f94" {
-    description "";
     exchanges [@sa_repair_request, @sa_repair_report];
-    family "Work";
-    parent none;
 }
 
diff --git a/examples/release1/sa/participants.arcadia b/examples/release1/sa/participants.arcadia
index 4b9c5558..3bb62d30 100644
--- a/examples/release1/sa/participants.arcadia
+++ b/examples/release1/sa/participants.arcadia
@@ -1,6 +1,4 @@
 sa_system sa_control "Pressure coordination service" id "435bf87c-73fd-5e4d-978a-4c471bc9eaf0" {
-    description "";
-    parent none;
 }
 
 sa_port sa_control_port "Repair service client" id "98d411e7-7c65-5c3f-b543-8bf0f2522ea2" {
@@ -11,13 +9,10 @@ sa_port sa_control_port "Repair service client" id "98d411e7-7c65-5c3f-b543-8bf0
         };
     };
     description "Explicitly chosen Standard component port for the repair service.";
-    legacy none;
     parent @sa_control;
 }
 
 sa_actor sa_technician "Field technician" id "c05b9422-b9da-5de5-b21d-07ad23bd2b8a" {
-    description "";
-    parent none;
 }
 
 sa_port sa_technician_port "Repair service provider" id "e6d69cbd-99d7-596b-bbe3-dada6118a600" {
@@ -28,36 +23,30 @@ sa_port sa_technician_port "Repair service provider" id "e6d69cbd-99d7-596b-bbe3
         };
     };
     description "Explicitly chosen Standard component port for the repair service.";
-    legacy none;
     parent @sa_technician;
 }
 
 allocation sa_assess_allocation "Allocation: Assess pressure alarm" id "9b9356d7-2db2-5a94-a47e-ea892cf02afe" {
-    description "";
     source @sa_control;
     target @sa_assess;
 }
 
 allocation sa_audit_allocation "Allocation: Audit pressure thresholds" id "1b245065-7242-5d81-8472-aaeb932054c9" {
-    description "";
     source @sa_control;
     target @sa_audit_thresholds;
 }
 
 allocation sa_confirm_allocation "Allocation: Confirm safe pressure" id "b76bf8de-2fa4-563f-a540-dd30f30e6c49" {
-    description "";
     source @sa_control;
     target @sa_confirm;
 }
 
 interface_requirement sa_client_requires "Interface requirement: Valve repair service" id "4f85337b-f6eb-533c-a45a-9a5d1d9567ca" {
-    description "";
     source @sa_control_port;
     target @sa_repair_interface;
 }
 
 boundary_exchange sa_contact "Technician service conversation" id "63009b5f-539e-5914-b630-ec6b7fefb4d5" {
-    description "";
     items [@sa_repair_operation];
     oriented false;
     source @sa_control_port;
@@ -65,61 +54,51 @@ boundary_exchange sa_contact "Technician service conversation" id "63009b5f-539e
 }
 
 exchange_allocation sa_report_carriage "Exchange allocation: Report repair result" id "ff9897b3-a23a-5994-a5b3-99a5b4d34ceb" {
-    description "";
     source @sa_contact;
     target @sa_repair_report;
 }
 
 exchange_allocation sa_request_carriage "Exchange allocation: Request field repair" id "4c4c4851-5a3d-5bb9-94df-b19f9cf39819" {
-    description "";
     source @sa_contact;
     target @sa_repair_request;
 }
 
 port_allocation sa_port_report_in "Port allocation: Report repair result input" id "568c5c01-de21-52a2-83bd-afdddc158085" {
-    description "";
     source @sa_control_port;
     target @sa_repair_report_in;
 }
 
 port_allocation sa_port_request_out "Port allocation: Request field repair output" id "55ec4dbf-bd17-5b0c-b3a3-95b2194aa8b9" {
-    description "";
     source @sa_control_port;
     target @sa_repair_request_out;
 }
 
 mission_involvement sa_mission_participant "Mission involvement: Maintain safe water supply" id "1c1e5634-ba8c-591f-b143-90a27cdc6cd2" {
-    description "";
     source @sa_control;
     target @sa_mission;
 }
 
 allocation sa_reset_allocation "Allocation: Reset valve remotely" id "3cc9ab52-2b00-57fd-8709-aabc75e5d3e3" {
-    description "";
     source @sa_control;
     target @sa_reset;
 }
 
 allocation sa_repair_allocation "Allocation: Repair valve in the field" id "725f2e1b-aa2c-5615-9b1f-28da178168fa" {
-    description "";
     source @sa_technician;
     target @sa_repair;
 }
 
 port_allocation sa_port_report_out "Port allocation: Report repair result output" id "e53b7a40-e8a3-5b3f-826d-c2b5c164a84a" {
-    description "";
     source @sa_technician_port;
     target @sa_repair_report_out;
 }
 
 port_allocation sa_port_request_in "Port allocation: Request field repair input" id "09eaa992-4cdf-5ea3-b748-f10fd74b8cba" {
-    description "";
     source @sa_technician_port;
     target @sa_repair_request_in;
 }
 
 interface_provision sa_provider_provides "Interface provision: Valve repair service" id "55f89fbf-aa3c-5ae1-95ef-ac676f9c1ada" {
-    description "";
     source @sa_technician_port;
     target @sa_repair_interface;
 }
diff --git a/examples/release1/sa/types.arcadia b/examples/release1/sa/types.arcadia
index faa0117f..e876932a 100644
--- a/examples/release1/sa/types.arcadia
+++ b/examples/release1/sa/types.arcadia
@@ -1,48 +1,30 @@
 sa_data_type sa_pressure "Measured pressure" id "87d0a95b-af1b-5352-b753-e4c6533671a5" {
-    default none;
     definition {
         Real {
             maximum 600.0;
             minimum 0.0;
         };
     };
-    description "";
-    parent none;
     unit "kPa";
 }
 
 sa_interface sa_repair_interface "Valve repair service" id "a4b8942e-a975-5f88-ad14-8f38c345baac" {
-    description "";
-    parent none;
-    supertype none;
 }
 
 sa_exchange_item sa_repair_operation "Valve repair" id "a962fc5e-3ab0-5296-8b0d-fd84633f9218" {
-    description "";
-    kind Information;
     mechanism Operation;
-    parent none;
-    supertype none;
 }
 
 sa_data_field sa_pressure_parameter "Pressure before / after repair" id "bb12ba5d-aab5-5a1b-99de-c767f5365b57" {
-    default none;
-    description "";
     direction InOut;
-    maximum 1;
-    minimum 1;
     parent @sa_repair_operation;
-    storage Value;
     type_ref {
         Named @sa_pressure;
     };
-    unit "";
 }
 
 interface_item_allocation sa_repair_interface_item "Repair operation contract" id "f074e041-23cf-54ad-af9c-f171e30621e7" {
     acquisition Accept;
-    description "";
-    order 0;
     source @sa_repair_interface;
     target @sa_repair_operation;
     transmission Synchronous;
diff --git a/examples/release1/traceability.arcadia b/examples/release1/traceability.arcadia
index b185b027..6a5bb102 100644
--- a/examples/release1/traceability.arcadia
+++ b/examples/release1/traceability.arcadia
@@ -9,7 +9,6 @@ trace trace_oa_alarm_transition "State transition: Awaiting repair ↔ State tra
             name "State transition: Awaiting repair";
         };
     };
-    description "";
     kind Manual;
     oa @oa_alarm_transition;
     sa @sa_alarm_transition;
@@ -26,8 +25,6 @@ trace trace_oa_assess "Assess pressure alarm ↔ Assess pressure alarm" id "5309
             name "Assess pressure alarm";
         };
     };
-    description "";
-    kind Refinement;
     oa @oa_assess;
     sa @sa_assess;
 }
@@ -43,7 +40,6 @@ trace trace_oa_assess_allocation "Allocation: Assess pressure alarm ↔ Allocati
             name "Allocation: Assess pressure alarm";
         };
     };
-    description "";
     kind Manual;
     oa @oa_assess_allocation;
     sa @sa_assess_allocation;
@@ -60,7 +56,6 @@ trace trace_oa_assess_on_entry "Assess when repair is needed ↔ Assess when rep
             name "Assess when repair is needed";
         };
     };
-    description "";
     kind Manual;
     oa @oa_assess_on_entry;
     sa @sa_assess_on_entry;
@@ -77,7 +72,6 @@ trace trace_oa_assess_step "Assess the alarm ↔ Assess the alarm" id "e848da41-
             name "Assess the alarm";
         };
     };
-    description "";
     kind Sequence;
     oa @oa_assess_step;
     sa @sa_assess_step;
@@ -94,7 +88,6 @@ trace trace_oa_assess_then_decide "Continue ↔ Continue" id "a5c1eb01-a95f-5f7a
             name "Continue";
         };
     };
-    description "";
     kind Manual;
     oa @oa_assess_then_decide;
     sa @sa_assess_then_decide;
@@ -111,7 +104,6 @@ trace trace_oa_assessment_action "Assess pressure alarm ↔ Assess pressure alar
             name "Assess pressure alarm";
         };
     };
-    description "";
     kind Sequence;
     oa @oa_assessment_action;
     sa @sa_assessment_action;
@@ -128,7 +120,6 @@ trace trace_oa_assessment_delivery "Chain involvement: Assess an alarm ↔ Chain
             name "Chain involvement: Assess an alarm";
         };
     };
-    description "";
     kind Manual;
     oa @oa_assessment_delivery;
     sa @sa_assessment_delivery;
@@ -145,7 +136,6 @@ trace trace_oa_assessment_procedure "Assess an alarm procedure ↔ Assess an ala
             name "Assess an alarm procedure";
         };
     };
-    description "";
     kind Sequence;
     oa @oa_assessment_procedure;
     sa @sa_assessment_procedure;
@@ -162,7 +152,6 @@ trace trace_oa_assessment_support "Capability involvement: Assess an alarm ↔ C
             name "Capability involvement: Assess an alarm";
         };
     };
-    description "";
     kind Manual;
     oa @oa_assessment_support;
     sa @sa_assessment_support;
@@ -179,7 +168,6 @@ trace trace_oa_call "Request valve repair ↔ Request valve repair" id "f0cc86e5
             name "Request valve repair";
         };
     };
-    description "";
     kind Scenario;
     oa @oa_call;
     sa @sa_call;
@@ -196,7 +184,6 @@ trace trace_oa_caller "Controller ↔ Controller" id "241dfdac-2450-5704-a4cb-9f
             name "Controller";
         };
     };
-    description "";
     kind Scenario;
     oa @oa_caller;
     sa @sa_caller;
@@ -213,8 +200,6 @@ trace trace_oa_confirm "Confirm safe pressure ↔ Confirm safe pressure" id "d77
             name "Confirm safe pressure";
         };
     };
-    description "";
-    kind Refinement;
     oa @oa_confirm;
     sa @sa_confirm;
 }
@@ -230,7 +215,6 @@ trace trace_oa_confirm_allocation "Allocation: Confirm safe pressure ↔ Allocat
             name "Allocation: Confirm safe pressure";
         };
     };
-    description "";
     kind Manual;
     oa @oa_confirm_allocation;
     sa @sa_confirm_allocation;
@@ -247,7 +231,6 @@ trace trace_oa_confirm_path "Continue ↔ Continue" id "a106d183-c239-5c9f-b1f1-
             name "Continue";
         };
     };
-    description "";
     kind Manual;
     oa @oa_confirm_path;
     sa @sa_confirm_path;
@@ -264,7 +247,6 @@ trace trace_oa_confirm_step "Confirm safe pressure ↔ Confirm safe pressure" id
             name "Confirm safe pressure";
         };
     };
-    description "";
     kind Sequence;
     oa @oa_confirm_step;
     sa @sa_confirm_step;
@@ -281,7 +263,6 @@ trace trace_oa_contact "Technician service conversation ↔ Technician service c
             name "Technician service conversation";
         };
     };
-    description "";
     kind Exchange;
     oa @oa_contact;
     sa @sa_contact;
@@ -298,7 +279,6 @@ trace trace_oa_contact_category "Field contact ↔ Field contact" id "e96ff119-b
             name "Field contact";
         };
     };
-    description "";
     kind Manual;
     oa @oa_contact_category;
     sa @sa_contact_category;
@@ -315,7 +295,6 @@ trace trace_oa_control "Control room ↔ Pressure coordination service" id "aba5
             name "Pressure coordination service";
         };
     };
-    description "";
     kind Participant;
     oa @oa_control;
     sa @sa_control;
@@ -332,7 +311,6 @@ trace trace_oa_conversation "Repair request and measured reply ↔ Repair reques
             name "Repair request and measured reply";
         };
     };
-    description "";
     kind Scenario;
     oa @oa_conversation;
     sa @sa_conversation;
@@ -349,7 +327,6 @@ trace trace_oa_decision "Can a remote reset safely recover pressure? ↔ Can a r
             name "Can a remote reset safely recover pressure?";
         };
     };
-    description "";
     kind Sequence;
     oa @oa_decision;
     sa @sa_decision;
@@ -366,7 +343,6 @@ trace trace_oa_field_merge "Continue ↔ Continue" id "d32dd433-9c9e-5b57-9355-2
             name "Continue";
         };
     };
-    description "";
     kind Manual;
     oa @oa_field_merge;
     sa @sa_field_merge;
@@ -383,7 +359,6 @@ trace trace_oa_field_path "else ↔ else" id "2e849e31-35aa-5aef-a989-26948038e5
             name "else";
         };
     };
-    description "";
     kind Manual;
     oa @oa_field_path;
     sa @sa_field_path;
@@ -400,7 +375,6 @@ trace trace_oa_field_procedure "Field repair procedure ↔ Field repair procedur
             name "Field repair procedure";
         };
     };
-    description "";
     kind Sequence;
     oa @oa_field_procedure;
     sa @sa_field_procedure;
@@ -417,7 +391,6 @@ trace trace_oa_full_scenario "Restore supply through field repair ↔ Restore su
             name "Restore supply through field repair";
         };
     };
-    description "";
     kind Scenario;
     oa @oa_full_scenario;
     sa @sa_full_scenario;
@@ -434,7 +407,6 @@ trace trace_oa_high_pressure "Pressure alarm detected ↔ Pressure alarm detecte
             name "Pressure alarm detected";
         };
     };
-    description "";
     kind State;
     oa @oa_high_pressure;
     sa @sa_high_pressure;
@@ -451,7 +423,6 @@ trace trace_oa_include_triage "Capability include: Assess an alarm ↔ Capabilit
             name "Capability include: Assess an alarm";
         };
     };
-    description "";
     kind Manual;
     oa @oa_include_triage;
     sa @sa_include_triage;
@@ -468,7 +439,6 @@ trace trace_oa_merge "Recovery path completed ↔ Recovery path completed" id "0
             name "Recovery path completed";
         };
     };
-    description "";
     kind Sequence;
     oa @oa_merge;
     sa @sa_merge;
@@ -485,7 +455,6 @@ trace trace_oa_mission "Maintain safe water supply ↔ Maintain safe water suppl
             name "Maintain safe water supply";
         };
     };
-    description "";
     kind Mission;
     oa @oa_mission;
     sa @sa_mission;
@@ -502,7 +471,6 @@ trace trace_oa_mission_delivery "Mission capability: Restore a safe supply ↔ M
             name "Mission capability: Restore a safe supply";
         };
     };
-    description "";
     kind Manual;
     oa @oa_mission_delivery;
     sa @sa_mission_delivery;
@@ -519,7 +487,6 @@ trace trace_oa_mission_participant "Mission involvement: Maintain safe water sup
             name "Mission involvement: Maintain safe water supply";
         };
     };
-    description "";
     kind Manual;
     oa @oa_mission_participant;
     sa @sa_mission_participant;
@@ -536,7 +503,6 @@ trace trace_oa_monitor "Pressure supervision ↔ Pressure supervision" id "b5386
             name "Pressure supervision";
         };
     };
-    description "";
     kind State;
     oa @oa_monitor;
     sa @sa_monitor;
@@ -553,7 +519,6 @@ trace trace_oa_monitor_initial "Start ↔ Start" id "48d243f0-553f-507e-acb0-947
             name "Start";
         };
     };
-    description "";
     kind State;
     oa @oa_monitor_initial;
     sa @sa_monitor_initial;
@@ -570,7 +535,6 @@ trace trace_oa_monitor_region "Supervision cycle ↔ Supervision cycle" id "2087
             name "Supervision cycle";
         };
     };
-    description "";
     kind State;
     oa @oa_monitor_region;
     sa @sa_monitor_region;
@@ -587,7 +551,6 @@ trace trace_oa_monitoring "Monitoring ↔ Monitoring" id "12ec320f-2e14-5a5a-8c6
             name "Monitoring";
         };
     };
-    description "";
     kind State;
     oa @oa_monitoring;
     sa @sa_monitoring;
@@ -604,7 +567,6 @@ trace trace_oa_normal_transition "State transition: Monitoring ↔ State transit
             name "State transition: Monitoring";
         };
     };
-    description "";
     kind Manual;
     oa @oa_normal_transition;
     sa @sa_normal_transition;
@@ -621,7 +583,6 @@ trace trace_oa_outer_controller "Controller ↔ Controller" id "fd195498-dbba-52
             name "Controller";
         };
     };
-    description "";
     kind Scenario;
     oa @oa_outer_controller;
     sa @sa_outer_controller;
@@ -638,7 +599,6 @@ trace trace_oa_outer_technician "Technician ↔ Technician" id "c132a0df-1270-55
             name "Technician";
         };
     };
-    description "";
     kind Scenario;
     oa @oa_outer_technician;
     sa @sa_outer_technician;
@@ -655,7 +615,6 @@ trace trace_oa_pressure "Measured pressure ↔ Measured pressure" id "d9d47371-e
             name "Measured pressure";
         };
     };
-    description "";
     kind Item;
     oa @oa_pressure;
     sa @sa_pressure;
@@ -672,7 +631,6 @@ trace trace_oa_pressure_parameter "Pressure before / after repair ↔ Pressure b
             name "Pressure before / after repair";
         };
     };
-    description "";
     kind Item;
     oa @oa_pressure_parameter;
     sa @sa_pressure_parameter;
@@ -689,7 +647,6 @@ trace trace_oa_remote_merge "Continue ↔ Continue" id "1b788e74-36b2-5c17-a936-
             name "Continue";
         };
     };
-    description "";
     kind Manual;
     oa @oa_remote_merge;
     sa @sa_remote_merge;
@@ -706,7 +663,6 @@ trace trace_oa_remote_path "remote reset is authorized ↔ remote reset is autho
             name "remote reset is authorized";
         };
     };
-    description "";
     kind Manual;
     oa @oa_remote_path;
     sa @sa_remote_path;
@@ -723,8 +679,6 @@ trace trace_oa_repair "Repair valve in the field ↔ Repair valve in the field"
             name "Repair valve in the field";
         };
     };
-    description "";
-    kind Refinement;
     oa @oa_repair;
     sa @sa_repair;
 }
@@ -740,7 +694,6 @@ trace trace_oa_repair_allocation "Allocation: Repair valve in the field ↔ Allo
             name "Allocation: Repair valve in the field";
         };
     };
-    description "";
     kind Manual;
     oa @oa_repair_allocation;
     sa @sa_repair_allocation;
@@ -757,7 +710,6 @@ trace trace_oa_repair_operation "Valve repair ↔ Valve repair" id "cf92cedf-ea1
             name "Valve repair";
         };
     };
-    description "";
     kind Item;
     oa @oa_repair_operation;
     sa @sa_repair_operation;
@@ -774,7 +726,6 @@ trace trace_oa_repair_report "Report repair result ↔ Report repair result" id
             name "Report repair result";
         };
     };
-    description "";
     kind Exchange;
     oa @oa_repair_report;
     sa @sa_repair_report;
@@ -791,7 +742,6 @@ trace trace_oa_repair_request "Request field repair ↔ Request field repair" id
             name "Request field repair";
         };
     };
-    description "";
     kind Exchange;
     oa @oa_repair_request;
     sa @sa_repair_request;
@@ -808,7 +758,6 @@ trace trace_oa_repair_step "Repair the valve ↔ Repair the valve" id "ac3aa6b0-
             name "Repair the valve";
         };
     };
-    description "";
     kind Sequence;
     oa @oa_repair_step;
     sa @sa_repair_step;
@@ -825,7 +774,6 @@ trace trace_oa_repair_then_report "Sequence link: Report the measured result ↔
             name "Sequence link: Report the measured result";
         };
     };
-    description "";
     kind Manual;
     oa @oa_repair_then_report;
     sa @sa_repair_then_report;
@@ -842,7 +790,6 @@ trace trace_oa_repair_traffic "Repair work exchanges ↔ Repair work exchanges"
             name "Repair work exchanges";
         };
     };
-    description "";
     kind Manual;
     oa @oa_repair_traffic;
     sa @sa_repair_traffic;
@@ -859,7 +806,6 @@ trace trace_oa_reply "Return pressure after repair ↔ Return pressure after rep
             name "Return pressure after repair";
         };
     };
-    description "";
     kind Scenario;
     oa @oa_reply;
     sa @sa_reply;
@@ -876,7 +822,6 @@ trace trace_oa_report_step "Report the measured result ↔ Report the measured r
             name "Report the measured result";
         };
     };
-    description "";
     kind Sequence;
     oa @oa_report_step;
     sa @sa_report_step;
@@ -893,7 +838,6 @@ trace trace_oa_request_step "Request the field repair ↔ Request the field repa
             name "Request the field repair";
         };
     };
-    description "";
     kind Sequence;
     oa @oa_request_step;
     sa @sa_request_step;
@@ -910,7 +854,6 @@ trace trace_oa_request_then_repair "Sequence link: Repair the valve ↔ Sequence
             name "Sequence link: Repair the valve";
         };
     };
-    description "";
     kind Manual;
     oa @oa_request_then_repair;
     sa @sa_request_then_repair;
@@ -927,8 +870,6 @@ trace trace_oa_reset "Reset valve remotely ↔ Reset valve remotely" id "82a5be1
             name "Reset valve remotely";
         };
     };
-    description "";
-    kind Refinement;
     oa @oa_reset;
     sa @sa_reset;
 }
@@ -944,7 +885,6 @@ trace trace_oa_reset_allocation "Allocation: Reset valve remotely ↔ Allocation
             name "Allocation: Reset valve remotely";
         };
     };
-    description "";
     kind Manual;
     oa @oa_reset_allocation;
     sa @sa_reset_allocation;
@@ -961,7 +901,6 @@ trace trace_oa_reset_step "Try the authorized remote reset ↔ Try the authorize
             name "Try the authorized remote reset";
         };
     };
-    description "";
     kind Sequence;
     oa @oa_reset_step;
     sa @sa_reset_step;
@@ -978,7 +917,6 @@ trace trace_oa_responder "Technician ↔ Technician" id "c5051628-b7af-5fb1-a014
             name "Technician";
         };
     };
-    description "";
     kind Scenario;
     oa @oa_responder;
     sa @sa_responder;
@@ -995,7 +933,6 @@ trace trace_oa_response "Handle a pressure alarm ↔ Handle a pressure alarm" id
             name "Handle a pressure alarm";
         };
     };
-    description "";
     kind Sequence;
     oa @oa_response;
     sa @sa_response;
@@ -1012,7 +949,6 @@ trace trace_oa_response_delivery "Chain involvement: Restore a safe supply ↔ C
             name "Chain involvement: Restore a safe supply";
         };
     };
-    description "";
     kind Manual;
     oa @oa_response_delivery;
     sa @sa_response_delivery;
@@ -1029,7 +965,6 @@ trace trace_oa_restore "Restore a safe supply ↔ Restore a safe supply" id "0fb
             name "Restore a safe supply";
         };
     };
-    description "";
     kind Capability;
     oa @oa_restore;
     sa @sa_restore;
@@ -1046,8 +981,6 @@ trace trace_oa_restore_work "Restore safe pressure ↔ Restore safe pressure" id
             name "Restore safe pressure";
         };
     };
-    description "";
-    kind Refinement;
     oa @oa_restore_work;
     sa @sa_restore_work;
 }
@@ -1063,7 +996,6 @@ trace trace_oa_start_monitoring "State transition: Monitoring ↔ State transiti
             name "State transition: Monitoring";
         };
     };
-    description "";
     kind Manual;
     oa @oa_start_monitoring;
     sa @sa_start_monitoring;
@@ -1080,7 +1012,6 @@ trace trace_oa_technician "Field technician ↔ Field technician" id "d47d3c36-5
             name "Field technician";
         };
     };
-    description "";
     kind Participant;
     oa @oa_technician;
     sa @sa_technician;
@@ -1097,7 +1028,6 @@ trace trace_oa_triage "Assess an alarm ↔ Assess an alarm" id "6acd072d-431e-58
             name "Assess an alarm";
         };
     };
-    description "";
     kind Capability;
     oa @oa_triage;
     sa @sa_triage;
@@ -1114,7 +1044,6 @@ trace trace_oa_use_conversation "Use the reviewed repair conversation ↔ Use th
             name "Use the reviewed repair conversation";
         };
     };
-    description "";
     kind Scenario;
     oa @oa_use_conversation;
     sa @sa_use_conversation;
@@ -1131,7 +1060,6 @@ trace trace_oa_use_field "Use the field repair procedure ↔ Use the field repai
             name "Use the field repair procedure";
         };
     };
-    description "";
     kind Sequence;
     oa @oa_use_field;
     sa @sa_use_field;
@@ -1148,7 +1076,6 @@ trace trace_oa_waiting "Awaiting repair ↔ Awaiting repair" id "0754be23-e4b8-5
             name "Awaiting repair";
         };
     };
-    description "";
     kind State;
     oa @oa_waiting;
     sa @sa_waiting;
diff --git a/examples/release1/views/diagram_oa_allocation_view.arcadia b/examples/release1/views/diagram_oa_allocation_view.arcadia
index 0c34ca06..05bf6890 100644
--- a/examples/release1/views/diagram_oa_allocation_view.arcadia
+++ b/examples/release1/views/diagram_oa_allocation_view.arcadia
@@ -1,21 +1,9 @@
 diagram oa_allocation_view "1 · OA responsibility and repair traffic" id "103ea62c-ac56-5827-94e7-cf09bca96ccc" {
     description "Teaching view: positions and filters do not change ownership or exchange identities.";
-    layer Oa;
     projection Allocation;
-    routes [];
-    view_options {
-        coverage "All";
-        exchange_labels "Name";
-        hidden_edges [];
-        participant_categories "All";
-        relation_kinds "All";
-        work_categories "All";
-        work_contexts "All";
-    };
 }
 
 node oa_allocation_view_oa_assess id "5ae1c46d-59a3-50fd-8cc3-b292df21f951" {
-    collapsed false;
     diagram @oa_allocation_view;
     element @oa_assess;
     position {
@@ -29,7 +17,6 @@ node oa_allocation_view_oa_assess id "5ae1c46d-59a3-50fd-8cc3-b292df21f951" {
 }
 
 node oa_allocation_view_oa_confirm id "edd74060-ac61-5450-a57c-a6577daa5d50" {
-    collapsed false;
     diagram @oa_allocation_view;
     element @oa_confirm;
     position {
@@ -43,7 +30,6 @@ node oa_allocation_view_oa_confirm id "edd74060-ac61-5450-a57c-a6577daa5d50" {
 }
 
 node oa_allocation_view_oa_control id "3191e05c-1c7f-5f0e-beb0-5f3bded54c48" {
-    collapsed false;
     diagram @oa_allocation_view;
     element @oa_control;
     position {
@@ -57,7 +43,6 @@ node oa_allocation_view_oa_control id "3191e05c-1c7f-5f0e-beb0-5f3bded54c48" {
 }
 
 node oa_allocation_view_oa_repair id "202ebe37-ddb4-5099-8ce9-ec3e895ab9e9" {
-    collapsed false;
     diagram @oa_allocation_view;
     element @oa_repair;
     position {
@@ -71,7 +56,6 @@ node oa_allocation_view_oa_repair id "202ebe37-ddb4-5099-8ce9-ec3e895ab9e9" {
 }
 
 node oa_allocation_view_oa_reset id "7066f78c-9736-5349-b94a-0587331b980e" {
-    collapsed false;
     diagram @oa_allocation_view;
     element @oa_reset;
     position {
@@ -85,7 +69,6 @@ node oa_allocation_view_oa_reset id "7066f78c-9736-5349-b94a-0587331b980e" {
 }
 
 node oa_allocation_view_oa_technician id "d27f28ef-f10a-5355-9a05-6f2fd39b7de6" {
-    collapsed false;
     diagram @oa_allocation_view;
     element @oa_technician;
     position {
diff --git a/examples/release1/views/diagram_sa_allocation_view.arcadia b/examples/release1/views/diagram_sa_allocation_view.arcadia
index b3f72d22..ff60c8b8 100644
--- a/examples/release1/views/diagram_sa_allocation_view.arcadia
+++ b/examples/release1/views/diagram_sa_allocation_view.arcadia
@@ -2,20 +2,9 @@ diagram sa_allocation_view "2 · SA service boundary and functions" id "35d3c24b
     description "Teaching view: positions and filters do not change ownership or exchange identities.";
     layer Sa;
     projection Allocation;
-    routes [];
-    view_options {
-        coverage "All";
-        exchange_labels "Name";
-        hidden_edges [];
-        participant_categories "All";
-        relation_kinds "All";
-        work_categories "All";
-        work_contexts "All";
-    };
 }
 
 node sa_allocation_view_sa_assess id "60f6ad74-b69e-5aef-b832-f1bd60b903ae" {
-    collapsed false;
     diagram @sa_allocation_view;
     element @sa_assess;
     position {
@@ -29,7 +18,6 @@ node sa_allocation_view_sa_assess id "60f6ad74-b69e-5aef-b832-f1bd60b903ae" {
 }
 
 node sa_allocation_view_sa_confirm id "7e3ba36f-bc68-5520-bdb9-77083bb7bba2" {
-    collapsed false;
     diagram @sa_allocation_view;
     element @sa_confirm;
     position {
@@ -43,7 +31,6 @@ node sa_allocation_view_sa_confirm id "7e3ba36f-bc68-5520-bdb9-77083bb7bba2" {
 }
 
 node sa_allocation_view_sa_control id "8345c76a-8d85-5c31-902e-ec1cd33ed4a3" {
-    collapsed false;
     diagram @sa_allocation_view;
     element @sa_control;
     position {
@@ -57,7 +44,6 @@ node sa_allocation_view_sa_control id "8345c76a-8d85-5c31-902e-ec1cd33ed4a3" {
 }
 
 node sa_allocation_view_sa_repair id "34630a18-41b0-5fdd-bff4-ee86e93e8651" {
-    collapsed false;
     diagram @sa_allocation_view;
     element @sa_repair;
     position {
@@ -71,7 +57,6 @@ node sa_allocation_view_sa_repair id "34630a18-41b0-5fdd-bff4-ee86e93e8651" {
 }
 
 node sa_allocation_view_sa_reset id "73406244-ebd7-5995-86c7-e17c73c50b32" {
-    collapsed false;
     diagram @sa_allocation_view;
     element @sa_reset;
     position {
@@ -85,7 +70,6 @@ node sa_allocation_view_sa_reset id "73406244-ebd7-5995-86c7-e17c73c50b32" {
 }
 
 node sa_allocation_view_sa_technician id "f7225d1c-e506-505d-bb20-916950269d4b" {
-    collapsed false;
     diagram @sa_allocation_view;
     element @sa_technician;
     position {
diff --git a/examples/release1/views/diagram_sa_capability_view.arcadia b/examples/release1/views/diagram_sa_capability_view.arcadia
index 0b6b78ed..9033d91e 100644
--- a/examples/release1/views/diagram_sa_capability_view.arcadia
+++ b/examples/release1/views/diagram_sa_capability_view.arcadia
@@ -2,20 +2,9 @@ diagram sa_capability_view "4 · SA mission and included capability" id "3e6ad19
     description "Teaching view: positions and filters do not change ownership or exchange identities.";
     layer Sa;
     projection Capabilities;
-    routes [];
-    view_options {
-        coverage "All";
-        exchange_labels "Name";
-        hidden_edges [];
-        participant_categories "All";
-        relation_kinds "All";
-        work_categories "All";
-        work_contexts "All";
-    };
 }
 
 node sa_capability_view_sa_control id "41ddb68b-bd2b-5f91-82eb-efde01157828" {
-    collapsed false;
     diagram @sa_capability_view;
     element @sa_control;
     position {
@@ -29,7 +18,6 @@ node sa_capability_view_sa_control id "41ddb68b-bd2b-5f91-82eb-efde01157828" {
 }
 
 node sa_capability_view_sa_mission id "4b814335-bf98-5b68-85d5-ea549766517a" {
-    collapsed false;
     diagram @sa_capability_view;
     element @sa_mission;
     position {
@@ -43,7 +31,6 @@ node sa_capability_view_sa_mission id "4b814335-bf98-5b68-85d5-ea549766517a" {
 }
 
 node sa_capability_view_sa_restore id "d3bc13f9-7726-5280-83fe-63f391c45afb" {
-    collapsed false;
     diagram @sa_capability_view;
     element @sa_restore;
     position {
@@ -57,7 +44,6 @@ node sa_capability_view_sa_restore id "d3bc13f9-7726-5280-83fe-63f391c45afb" {
 }
 
 node sa_capability_view_sa_triage id "069a3fb3-077c-59d8-91da-27b0665143c7" {
-    collapsed false;
     diagram @sa_capability_view;
     element @sa_triage;
     position {
diff --git a/examples/release1/views/diagram_sa_service_view.arcadia b/examples/release1/views/diagram_sa_service_view.arcadia
index 48576c7b..90d331f0 100644
--- a/examples/release1/views/diagram_sa_service_view.arcadia
+++ b/examples/release1/views/diagram_sa_service_view.arcadia
@@ -2,24 +2,18 @@ diagram sa_service_view "3 · SA service conversation only" id "50af4c9b-93ce-5f
     description "Teaching view: positions and filters do not change ownership or exchange identities.";
     layer Sa;
     projection Allocation;
-    routes [];
     view_options {
-        coverage "All";
         exchange_labels "NameAndItems";
-        hidden_edges [];
         participant_categories {
             Any [@sa_contact_category];
         };
-        relation_kinds "All";
         work_categories {
             Any [];
         };
-        work_contexts "All";
     };
 }
 
 node sa_service_view_sa_assess id "439f1e45-e5ed-567c-978b-4c93ef267db1" {
-    collapsed false;
     diagram @sa_service_view;
     element @sa_assess;
     position {
@@ -33,7 +27,6 @@ node sa_service_view_sa_assess id "439f1e45-e5ed-567c-978b-4c93ef267db1" {
 }
 
 node sa_service_view_sa_confirm id "6f138672-149b-5f88-ab07-7fc413a42262" {
-    collapsed false;
     diagram @sa_service_view;
     element @sa_confirm;
     position {
@@ -47,7 +40,6 @@ node sa_service_view_sa_confirm id "6f138672-149b-5f88-ab07-7fc413a42262" {
 }
 
 node sa_service_view_sa_control id "f53d4352-b042-56a6-8b3e-c51cd27254f9" {
-    collapsed false;
     diagram @sa_service_view;
     element @sa_control;
     position {
@@ -61,7 +53,6 @@ node sa_service_view_sa_control id "f53d4352-b042-56a6-8b3e-c51cd27254f9" {
 }
 
 node sa_service_view_sa_repair id "ae36489d-6ec8-5f1c-b603-8b497227efba" {
-    collapsed false;
     diagram @sa_service_view;
     element @sa_repair;
     position {
@@ -75,7 +66,6 @@ node sa_service_view_sa_repair id "ae36489d-6ec8-5f1c-b603-8b497227efba" {
 }
 
 node sa_service_view_sa_reset id "d52da4e6-40b7-5dbc-84fb-80c443711c69" {
-    collapsed false;
     diagram @sa_service_view;
     element @sa_reset;
     position {
@@ -89,7 +79,6 @@ node sa_service_view_sa_reset id "d52da4e6-40b7-5dbc-84fb-80c443711c69" {
 }
 
 node sa_service_view_sa_technician id "40210589-69f7-5209-b329-10bb83cf615c" {
-    collapsed false;
     diagram @sa_service_view;
     element @sa_technician;
     position {
diff --git a/examples/release1/views/diagram_sa_state_view.arcadia b/examples/release1/views/diagram_sa_state_view.arcadia
index 6bbb6df1..37116b80 100644
--- a/examples/release1/views/diagram_sa_state_view.arcadia
+++ b/examples/release1/views/diagram_sa_state_view.arcadia
@@ -6,20 +6,9 @@ diagram sa_state_view "5 · SA pressure supervision" id "30d5baf9-6581-5cb6-846a
             machine @sa_monitor;
         };
     };
-    routes [];
-    view_options {
-        coverage "All";
-        exchange_labels "Name";
-        hidden_edges [];
-        participant_categories "All";
-        relation_kinds "All";
-        work_categories "All";
-        work_contexts "All";
-    };
 }
 
 node sa_state_view_sa_monitor id "a676fbb9-0833-59a8-98cf-a10d8f4b7434" {
-    collapsed false;
     diagram @sa_state_view;
     element @sa_monitor;
     position {
@@ -33,7 +22,6 @@ node sa_state_view_sa_monitor id "a676fbb9-0833-59a8-98cf-a10d8f4b7434" {
 }
 
 node sa_state_view_sa_monitor_initial id "5e2326a0-0f6c-5f8d-8a21-fdded18a9281" {
-    collapsed false;
     diagram @sa_state_view;
     element @sa_monitor_initial;
     position {
@@ -47,7 +35,6 @@ node sa_state_view_sa_monitor_initial id "5e2326a0-0f6c-5f8d-8a21-fdded18a9281"
 }
 
 node sa_state_view_sa_monitor_region id "55a74f91-2025-5001-8db8-9566b1dbe783" {
-    collapsed false;
     diagram @sa_state_view;
     element @sa_monitor_region;
     position {
@@ -61,7 +48,6 @@ node sa_state_view_sa_monitor_region id "55a74f91-2025-5001-8db8-9566b1dbe783" {
 }
 
 node sa_state_view_sa_monitoring id "b3af7b04-5a45-5b82-ab69-7eada4b876f0" {
-    collapsed false;
     diagram @sa_state_view;
     element @sa_monitoring;
     position {
@@ -75,7 +61,6 @@ node sa_state_view_sa_monitoring id "b3af7b04-5a45-5b82-ab69-7eada4b876f0" {
 }
 
 node sa_state_view_sa_waiting id "57acbb71-ca86-57fc-ae90-42dad195f0e0" {
-    collapsed false;
     diagram @sa_state_view;
     element @sa_waiting;
     position {