Vocabulary used in drawing activity diagrams

Question

In a drawing activity diagram when it says:

Activity A Follows Activity B

does it mean A->B or B->A?

I am confused with this lingo.

Answer 1

Due to your post in PMSE, I assume you are taking about network diagrams (vs. SW-engineering activity diagrams)? For network diagrams, it's like in normal language usage:

• A follows B, so
• A is the successor of B, or
• B is the predecessor of A:
• B -> A

See http://en.m.wikipedia.org/wiki/Dependency_%28project_management%29