Profile contract

sysml.ibd@1

Blocks with declared border ports and typed item flows. Profile-level coverage, not SysML conformance.

graph projectionInternal block-style view

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Primary palette

sysml.blocksysml.constraint

Additional context roles

req.requirementreq.testsysml.testcase

Relationship roles

assocsysml.allocatesysml.flowuml.generalization

Legal endpoints

Relation	Source roles	Target roles	Self relation
`assoc`	req.requirement, req.test, sysml.block, sysml.constraint, sysml.testcase	req.requirement, req.test, sysml.block, sysml.constraint, sysml.testcase	Allowed
`sysml.allocate`	req.requirement, req.test, sysml.block, sysml.constraint, sysml.testcase	req.requirement, req.test, sysml.block, sysml.constraint, sysml.testcase	Not allowed
`sysml.flow`	req.requirement, req.test, sysml.block, sysml.constraint, sysml.testcase	req.requirement, req.test, sysml.block, sysml.constraint, sysml.testcase	Not allowed
`uml.generalization`	sysml.block	sysml.block	Not allowed

Profile verification

Version-1 ports belong only to blocks; fields retain the bounded block member notation.
BDD emphasizes definitions and IBD emphasizes parts/ports/flows; the selected profile identity remains visible even when they share the renderer.

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": "sysml.ibd@1"
}

Projection properties

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

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Design operations

Create block; edit fields/ports; connect allocation or flow under exact endpoint rules.

Bounded analysis

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

Outside this profile

SysML XMI interchange
full SysML conformance
flow property propagation