Interaction Diagrams Numbering of Messages
Ordering of messages is defined by means of a nested numbering scheme
“Decimal classification”:
- n.m … mth message with the realization of message n
- If the only differences between two or more message numbers are the names at their end, then they may be potentially executed in parallel: 1.1.1a can be executed at the same time as 1.1.1b (both represent message 1.1.1)
In case of asynchronous control flow decimal classification is not used