Object node
A plain rectangle on the flow. Flows into and out of it are object flows.
diagram activity "Object on the flow"
start
action "Resolve dependencies"
object "Lockfile"
action "Compile"
stop
Syntax
object "name"
An object cannot directly follow start, as an initial node starts only control flows.
Specification
UML 2.5.1, 15.4.4 (p. 399).