 SURF                                                       Menu: (POLYG) PEDIT
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 Creates a set of surface polygons along a predefined plane or a free plane.

         1.   (CHAR) create surface along: (x, y or z) <z>, f- free point
      if `x' or 'y' is selected:
         2.   (NUM) width of surface (other than 0)
      if `z' is selected:
         2.   (NUM) height of surface (other than 0)
         3.   (POINT) first point
         4. * (POINT) next point (for arced surfaces press <ENTER>)
      if you press <ENTER> for arced surfaces:
         5.   (POINT) second point of arc
         6.   (POINT) last point of arc (<ENTER> for a NEW second pt.)
      if `f' is selected:
         2. * (POINT) first point
         3. * (POINT) second point
         4. * (POINT) through point




 Description:
 This command creates a model of closed surface polygons. It works like the
 \line command, but, instead of creating a line, it creates a rectangle surface
 polygon. You may also create an arc of surface polygons defined using three
 points; the system will create seven surface polygons. Another possibility is
 to define a free plane, by three points.
 You are prompted to select a creation option: along one of the major planes
 `x', `y' or `z' (`z' is the default), or define a free plane (option `f'). If
 `x' or `y' is selected, define the width of your surface polygon (you may
 enter a negative number to create the surface polygon in -x or -y, you may not
 enter 0). If `z' is selected, define the height of your surface polygon. Then
 define the first point of the polygon and when selecting the next point, the
 system creates a rectangled surface polygon with the defined width or height,
 allowing you to continue. Note that you may press <ENTER> to define a set of
 arced surface polygons by second and last points.
 After creating the arc, or any other linear surface, the system returns to
 parameter 4, "next point", until you select a new command.
 If you select option `f', the system asks for a first point, second point and
 a through point. The surface is created using the three defined points as the
 borders of the surface polygon.
 This command is especially useful for creating a quick economic "card" model
 that may be presented in hidden lines removal in the solid module.
