question

[Shailendra Gupta <sgupta at umbc.edu>]

Hi

I was wondering if you could help me out with this.

1) Once I have an object displayed, (say, an extrusion) , can I cut a slice 
   through it ? I mean, can I examine an individual cross-section by specifying   a cutting plane.


2) If I display a surface and some points (almost) lying on it, and examine it   using cam orbit etc., I can see the points from both sides of the surface. Is  there any way of knowing on which side of the surface a given point lies ?


Thanks a lot.

Shailendra Gupta