Sequence Diagrams
- Each diagram shows dynamics of scenario,
the time ordering of a sequence of method calls.
- Describe communication patterns (interaction) between objects.
- Object diagram: class name underlined

Format for object text:
objectName : ClassName (full description)
objectName (no class specified)
: ClassName (object not specified)
Elements:
- Objects
- Lifeline: indicate object lifetime
- Activation bar: indicate object activation (while in a method)