2013

The merge operation is performed only on mesh faces that are adjacent. Other
types of subobjects are removed from the selection set.
Merging mesh faces that wrap a corner can have unintended results when you
try to edit the mesh or convert it to other types of solid objects. For example,
the mesh might no longer be watertight. For best results, restrict mesh merging
to faces that are on the same plane.
List of Prompts
The following prompts are displayed.
Select adjacent faces to merge Specifies the mesh faces to combine. Click
each face to select it.
See also:
Modify Mesh Faces
MESHREFINE
Multiplies the number of faces in selected mesh objects or faces.
Access Methods
Menu: Modify  Mesh Editing  Refine Mesh
Summary
Refining a mesh object increases the number of editable faces, providing
additional control over fine modeling details. To preserve program memory,
you can refine specific faces instead of the entire object.
M Commands | 639