MODIFY lets you change a drawing instance's drawing scale,
rotation angle, location, view, lets you blank and unblank
entities, and change the levels visible in an instance.

SCALE   - lets you change the drawing scale of individual
          drawing instances in a layout by entering a new
          scale value.

ROTATE  - changes an instance's rotation angle by letting
          you enter a new value.

LOCATE  - changes the location of an instance in the
          drawing layout. 

VIEW    - changes an instance's display view by letting
          you choose a new view from a pop-up window.

BLANK   - lets you blank, or hide, instance-specific 
          entities in a drawing instance.

UNBLANK - redisplays the entities you hid using BLANK.

LEVEL   - lets you turn levels on and off in any of a 
          layout's drawing instances.
