List of Prompts
The following prompts
Enter option [?/Add/Delete/Reset/Exit]
<Add>: Enter an option or press Enter
Displays a list of defined scales.
Adds a new scale to the scale list. Enter a
ratio in the format n:m, where n is the number
of paper units and m is the number of drawing units
Removes a specified scale. If a scale is current
or supported by an annotative object,
it cannot be deleted.
Deletes all custom scales as a result and restores the
default list of scales.