We've a 2002 drawing we received. And it has a strange behaviour in which I've never seen (and thus, don't know how to fix/correct). In Paper space, it has three (3) viewports of the Model space building floor plan. The plans are spaced apart in Paperspace. When you double click in any one of the viewports (like Mspace)... then ALL THREE viewports zoom to Extents!!! If you lock a viewport then Mspace... the lock viewports dont' change state. Only non-locked VPs. I've never seen this in all my years of CAD. Anyone know where you turn this on/off? Thanks! Bruce