https://la.mathworks.com/help/stateflow/api/stateflow.port.html
Stateflow.Port - Entry or exit port in state or atomic subchart - MATLAB
Use Stateflow.Port objects to create ports and junctions that provide entry and exit connections across boundaries in the Stateflow hierarchy.
in statestateflowportentryexit
https://www.mathworks.com/help/stateflow/api/stateflow.atomicsubchart.setmappingforsymbol.html
setMappingForSymbol - Set mapping for symbol in atomic subchart, atomic box, or Simulink based...
This MATLAB function maps the subsystem symbol subsystemSymbol to the main chart symbol chartSymbol, where subsystem is an atomic subchart, atomic box, or...
for symbol
https://ch.mathworks.com/help/sldv/ref/sldvextract.html
sldvextract - Extract subsystem or subchart contents into new model for analysis - MATLAB
This MATLAB function extracts the contents of the atomic subsystem subsystem and creates a model for the Simulink Design Verifier software to analyze.
https://de.mathworks.com/help/sldv/ug/analyze-a-stateflow-atomic-subchart.html
Analyze a Stateflow Atomic Subchart - MATLAB & Simulink
Analyze an atomic subchart by using Simulink Design Verifier.
analyzestateflowatomicmatlabsimulink
https://nl.mathworks.com/help/stateflow/api/stateflow.atomicsubchart.html
Stateflow.AtomicSubchart - Atomic subchart in chart, state, or box - MATLAB
Use Stateflow.AtomicSubchart objects to create independent subcomponents in a Stateflow chart.
stateflowatomicchartboxmatlab