AUTO                                                          Menu: SCRN / SOLID
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Activates the automatic scaling mode, and displays the entire model.
(A nested command in the geometric module only.)
(Applicable in both geometric and solid modules.)

Description
This command activates the automatic scaling mode.  When the automatic scaling
mode is active the entire model is scaled to fill the screen.  Each subsequent
refresh operation will readjust the scale to accommodate new additions to the
model.  After executing \auto, the system returns to the previous command.

The letter `A'(automatic) or `F'(fixed) at the top of the screen indicates
the currently active mode.

Reference points of instances (placed objects) will always be within the
screen limits, but parts of such objects may be outside the screen display.
In such cases, it is recommended to draw a rectangle in order to mark the
whole area of the model so that when \auto is activated, the rectangle and all
the entities and objects therein will be displayed on the screen.

If you are currently in automatic scaling mode in the geometric module, or in
any of the display modes set by the \dsmod command in the solid module, the
screen will be redrawn in the appropriate display mode.  If you are in the
solid module and the display mode is currently "off", the new view will not be
displayed until a new display is specified, enabling you to execute a series
of manipulations before the screen is redrawn.

NOTE 1:  To activate fixed scaling mode, use the \nauto command.
NOTE 2: This command may be used in batch files.  The automatic scaling mode
can be toggled to fixed through the keyboard using <Alt> + a (instead of using
this command).
