Dealing with alternative flows in sequence diagrams

When creating sequence diagrams, using the Use Case Specifications, it is always troublesome to determine whether all sequences are to be drawn.

Also there are always parts in a use case that are shared amongst different sequences. To avoid creating an explosion of sequence diagrams, the UML 2.0 specification has created fragments.

I found an interesting (and short!) article on how to relatie alternative flows and sub flows into these fragments.

Check it out at: Managing-Complex-Interactions-with-Sequence-Fragments

Regards,

Richard