Activity type: Subprocess
(See: Business Process Model and Notation (BPMN) 2.0.)
BPMN 2.0 knows four types of subprocesses:
(standard) subprocess (A (standard) subprocess corresponds to the embedded subprocess in BPMN 1.x.)
transaction, and
adhoc subprocess
Each type of a subprocess can be displayed as
collapsed subprocess or
expanded subprocess
Collapsed subprocesses have a special marker displayed at the bottom of the respective subprocess symbol: