AutoCAD 2008 User's Guide > Work with 3D Models > Modify 3D Solids and Surfaces > Select and Modify 3D Subobjects > Select 3D Subobjects > 
Select 3D Subobjects
Concept Procedure Quick Reference
 
 
 

To cycle through and select subobjects that are overlapping

  1. Press and hold CTRL + SPACEBAR.
  2. Click as near as possible to the subobject you want.
  3. Keep clicking until the subobject you want is highlighted.
  4. Press ENTER to select the subobject.