Icon class icon_class fas fa-quote-left icon_class_computed fas fa-quote-left Related content uml101 - Activity Diagram - notation - REFERENCE CARD Source Unified Modeling Language 2.5.1 Copyright information About Object Management Group copyright in text extracts quoted from OMG specifications for educational purposes Snippet kind INFO UML keywords Activity Activity Diagram Action Pin InputPin OutputPin Action::/input Action::/output Previous snippet Full quote Pins are used to specify the inputs and outputs for Actions. Next snippet Related snippets Action::/input : InputPin [0..*] ... The ordered set of InputPins representing the inputs to the Action. Action::/output : OutputPin [0..*] ... The ordered set of OutputPins representing outputs from the Action. Related snippets (backlinks) An Action may accept inputs and produce outputs, as specified by InputPins and OutputPins of the Action, respectively. Each Pin on an Action specifies the type and multiplicity for a specific input or output of that Action. Visit also Visit also (backlinks) Flags