Talk:Sequence diagram

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I have rewritten the first paragraph, hoping to make it clearer, and added a "Usage and limitations" section with the main purpose of avoiding the misconception that sequence diagrams generally suffice to describe behavior. However I am not a real expert on sequence diagrams and theur use, so corrections will be much appreciated. Rp 17:42, 10 July 2006 (UTC)

In the first diagram, shouldn't the arrow for 'pickup' be pointing in the opposite direction? Surely it is the waiter that performs the 'pickup' action?

I would remove the phrase well-known - it's subjective. —The preceding unsigned comment was added by 83.67.57.153 (talk) 15:31, August 21, 2007 (UTC)