MBitmapXFlip BitmapNumber.w ; Horizontally flip a Bitmap (see MAutoStencilFlip)

Flips a previously-created chunky Bitmap's graphic horizontally. The operation
may also be performed on the stencil if MAutoStencilXFlip or MAutoStencilFlip
have been activated. The area of the Bitmap to be flipped can be cropped using the
Shape's clip window.