Define crossing windows or crossing polygons...
Options: Crossing Polygon or Crossing first point
Specify an option [CP/C] <Crossing first point>: Use a crossing window or a crossing polygon selection method
Specify an option [CP/C/Undo] <Crossing first point>: Specify an option, or press ENTER to continue
Specify an option [Remove objects] <Base point>: Specify a base point, press ENTER or enter R to remove object(s)
Second base point: Specify a second point or press ENTER


Usage Example:
Select multiple objects and expand their size with a crossing window and a crossing polygon.

Rectangular shapes:

Stretching shapes:

Shapes enlarged: