How Do I Depict A 'Limited Area' in ProE 2D Drawing?

We're talking about 2D of a cylinder, so it sounds like an axial section. In Pro/e, on the sectioning datum, create a cosmetic sketch (box, automatically hatched) of the area you wish to identify for special treatment.

David Janes

You need to find a way to create yourself separate surfaces, as you've already identified.

This is quick and dirty but entirely appropriate for many situations: model the machined interior of the tube with a single revolved cut, but instead of sketching a single line to form the tube ID, put a couple of notches "U" or "V" shape to divide where the three zones will be. Dimension each zone's diameter separately. Now you can show each zone with it's own tolerance and attach datums or geometric tolerances to each zone.

If there is a more streamlined way to do it I'm keenly interested in how. I'm using WF4 and I'm not aware of a better way.

David