[AccessD] Compacting on FE and BE

I've been wondering . . .

In a configuration where the system is split FE and BE, and the FE also has
local tables that are used for temporarily holding data, how are the local
tables compacted?  Particularly in Access XP when it's set to auto-compact?

I know that the BE is compacted when the last person exits.

Thanks!
Dan Waters
Quality Process Solutions