Editing Solids and Surfaces - Autodesk AutoCAD 2013 Practical 3D Drafting and Design - page 219

Operations with faces, edges, and volumes of
solids
When dealing with solids, it is frequently needed to modify faces, edges, and
volumes.
The SOLIDEDIT command
The SOLIDEDIT command (no alias) allows us to modify faces, edges, and volumes
(here called bodies) of solids. To apply this command, it is faster to use the Solid
Editing toolbar or the ribbon, Home | Solid Editing ; we jump directly to the wanted
option.
The interaction with the command starts by displaying whether the verification of
solids accuracy is turned on (the SOLIDCHECK variable):
Command: SOLIDEDIT
Solids editing automatic checking: SOLIDCHECK=1
Next, the main command options are displayed. Undo undoes the last command op-
eration and eXit ends the command. The remaining options are presented next:
Enter a solids editing option [Face/Edge/Body/
Undo/eXit] <eXit>: Option