DIGIS                                                              Menu: FILES
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Sets the digitizing parameters.

         1.  (Y/N) wish to redefine digitizing zone ?
      if you reply `y':
         2.  (POINT) lower left point of digitizing zone (on the tablet)
         3.  (POINT) upper right point of digitizing zone (on the tablet)
      for all options:
         4.  (POINT) origin point of drawing (on the tablet)
         5.  (NUM) horizontal coordinate of origin (real units)
         6.  (NUM) vertical coordinate of origin (real units)
         7.  (CHAR) horizontal axis (x,-x,y,-y,z,-z)
         8.  (CHAR) vertical axis (x,-x,y,-y,z,-z)
         9.  (NUM) drawing scale (0.01-100000)

Description
This command sets the system to digitizing mode. It also enables re-definition
of the digitizing zone on the tablet during the work session.

The main function of this command is to calibrate the digitizer according to
the drawing that is to be digitized.  You may assign the whole of the tablet
area to digitizing and use the same area for tablet menu selection.  This is
done by switching between the digitizing mode and the tablet menu mode by
pressing <Alt> + F7 or by executing the command \onofd.

When tablet menu zones are defined, the digitizing zone is set to the full
extent of the tablet, until it is redefined by this command.  The new
definition is saved, until a further change is made.

In order to use the digitizing zone you are prompted for various coordinate
parameters from the tablet.

On the tablet, pick a point that will serve as the origin of the drawing, then
enter the horizontal and vertical coordinates which that point represents in
the three dimensional environment of the system.  State which two axes will be
represented by the horizontal and vertical directions of the digitizer.

Finally, enter the scale of the drawing.
         Example:    \digis y
(pick 2 points on the tablet, defining digitizing zone) (pick 1 point
on the tablet, defining the origin of the drawing)
                     0 0 x y 100
Result:The digitizing zone for an XY drawing is set; the origin (0,0) of the
drawing is defined on the digitizer, and the scale of the drawing is 1:100.
