Draw Overexcavate Surface 3D Faces
Function
Use this command to draw the 3D faces of the overexcavated surface
model on the screen. The 3D faces will be drawn in the TK_OVERX_SURFACE
layer and will depend on the latest surface created using the make
and adjust routines.
Prerequisite: An overexcavate surface
Keyboard Command: draw_overx