MShapeWrap ShapeNumber.w,On/Off ; De/Activate X&Y Handle-Wrap for Shape

Specifically turns the wrapping for a chunky Shape On or Off. When On, the
Shape's handle may be used in creating the address of part of a graphics
operation, typically when outputting to the Shape. This is mainly used for scroll
methods. Wrapping is used in probably all graphics operations in Mildred.