In sequence diagrams, you can create lifelines to represent properties
within your application and specify their types.
Creating lifelines in sequence diagrams
In sequence diagrams, you can create lifelines to show how instances participate in interactions between source elements in applications.
Terminating lifelines with stop nodes in sequence diagrams
In sequence diagrams, when you create a destroy message, a stop node is created automatically on the lifeline. However, you can manually create a stop node on a lifeline to terminate the lifeline at a specific position.
Repositioning lifelines in sequence diagrams
In sequence diagrams, you can move a lifeline to reposition it in an interaction frame. Although the horizontal order of a lifeline does not have semantic value in the project, you can move the lifeline horizontally to position it in a location that makes the diagram easier to read.