Profile contract

uml.activity@1

Flow nodes plus fork/join bars and object nodes; swimlane partitions as view frames with declared node membership.

graph projectionActivity-style flow with partitions

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Primary palette

flow.decisionflow.endflow.forkjoinflow.objectnodeflow.processflow.start

Additional context roles

Relationship roles

uml.flow

Legal endpoints

Relation	Source roles	Target roles	Self relation
`uml.flow`	flow.acceptsignal, flow.choreotask, flow.connector, flow.decision, flow.end, flow.flowfinal, flow.forkjoin, flow.gateway, flow.group, flow.intermediate, flow.io, flow.merge, flow.objectnode, flow.process, flow.sendsignal, flow.start, flow.subprocess, flow.timeevent	flow.acceptsignal, flow.choreotask, flow.connector, flow.decision, flow.end, flow.flowfinal, flow.forkjoin, flow.gateway, flow.group, flow.intermediate, flow.io, flow.merge, flow.objectnode, flow.process, flow.sendsignal, flow.start, flow.subprocess, flow.timeevent	Not allowed

Profile verification

Retain flow start/end, reachability and named-decision-branch checks.
Partition references name declared lanes; fork/join counts balance under the current structural check.
Activity edges use uml.flow rather than ordinary flow.next.

Profile defaults

Explicit file settings override eligible CSS, then these profile defaults and the common standard apply. Unspecified semantic facts remain unspecified.

{
  "projection.kind": "graph",
  "projection.profile": "uml.activity@1"
}

Projection properties

kind, profile, inputs, analysis_budget, traces, iso, depth

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Design operations

Create actions/control nodes; add named lane frames; assign partitions; connect flows and label decisions.

Bounded analysis

Structural verification and display only; no execution or implied process engine.

Outside this profile

interruptible regions
pins and parameter sets
full UML conformance