Flow Port and Flow Specification are deprecated in this version of SysML and are defined for backward compatibility. Source OMG Systems Modeling Language (SysML) 1.7beta1
SysML: MagicDraw/Cameo: DO NOT use the FlowPort or FlowSpecification menu items or smart manipulator items they are completely OBSOLETE (they create fully DEPRECATED SysML model element types)! Use FlowProperty on Block features instead.
