AutoCAD 2008 User's Guide > Work with 3D Models > Create Sections and 2D Drawings from 3D Models > Live Sectioning > Understand Live Sectioning Behavior > 
Understand Live Sectioning Behavior
Concept Procedure Quick Reference
 
 
 

To turn live sectioning on and off

  1. Select a section object.
  2. Right-click the section line.
  3. Click Activate Live Sectioning to turn it on. If on, click to turn it off.