The commands available on a Constraint Block are as follows:

Commands on a Constraint Block
SysML diagram: Launch the SyML diagram creation wizard.
Flow port: Creates a FlowPort.
Port: Creates a Port.
Part: Creates a Part or an Instance.
The commands available on a Constraint Block are as follows:
SysML diagram: Launch the SyML diagram creation wizard.
Flow port: Creates a FlowPort.
Port: Creates a Port.
Part: Creates a Part or an Instance.