Architecting and designing : SysML : Diagram views : Sequence diagram : Lifelines on Sequence diagram
  
Lifelines on Sequence diagram
A Lifeline is drawn on a Sequence diagram to represent the lifetime of a participant. The lifeline symbol consists of a rectangle forming its ‘head’ followed by a vertical line (which may be dashed) that represents the lifetime of the participant.
You may specify what the Lifeline represents within its definition.
For example, to specify that the Lifeline represents a SysML Block, go to the NamedElement tab of the Lifeline definition, click the + mark on the inherited_member_inheriting_classifier property on page 13 of that tab, and then add a class – by default its stereotype is set to <<block>>.
A graphic depicting specifying a Lifeline
See
Lifeline creation
Lifeline destruction
See also
Messages on Sequence diagram
Generic Line on Sequence diagram
GeneralOrdering on Sequence diagram
Combined fragment on Sequence diagram
ConsiderIgnoreFragment on Sequence diagram
Constraints on Sequence diagram
Coregions on Sequence diagram
ExecutionSpecification on Sequence diagram
Interaction on Sequence diagram
InteractionOperand on Sequence diagram
InteractionUse on Sequence diagram
Observation on Sequence diagram
State Invariant on Sequence diagram
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Sequence diagram