INT 2F - OS/2 compatibility box - SWITCHING DOS TO FOREGROUND
AX = 4002h
Note:   called by OS/2 when the DOS box is about to be placed in the foreground
and the video driver should restore the previously-saved state
SeeAlso: AX=4006h

See also: 2F4001

2F4002 - OS/2 compatibility box - SWITCHING DOS TO FOREGROUND