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Editing Surface Sub-Objects 1143
whichedgeyouarechoosingwhentwosurfaces
have coincident edges.
The Join Surfaces dialog (page 1–1233) is
displayed, which gives you a choice of methods
for how to join the surfaces. Whichever method
youchoose,thesoftwarecreatesasinglesurface
that replaces the two original surfaces.
To close a surface:
• Select the sur face sub-object and then click
Close Rows or Close Cols.
Interfa ce
Surface Common rollout
Surface sub-object rollout
The controls on this rollout apply to all surface
types. Depending on the ty pe of surface, an
additional rollout is displayed with controls
specific to that type of surface.
Selection group
The selection buttons for surface sub-objects let
you select either individual surfaces, or surfaces
that are connected in space.