Index[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [R] [S] [T] [U] [V] [W] life cycle of object lifelines in Interaction Overview diagram in Sequence diagram 2nd lines activation bars for active participants arrowed lines (edges) between actors and use cases (communication lines) between classes (associations) between nodes (communication paths) between objects (links) between participants (communication links) lifelines for participants 2nd 3rd lightning bolt line (interruption regions) state-lines for participants links between objects communication links 2nd 3rd lists, templates used for 2nd logic analyzer, Timing diagram compared to logical view loop fragment |