INT 62 u - FGDRIVER v3.03+ - "FG_BOXX" - XOR HOLLOW RECTANGLE
	AX = 0008h
	BX = left column
	CX = right column
	DX = top row
	SI = bottom row
Notes:	the FGDRIVER functions are rearranged with each major release, but
	  their parameters do not change (see #03474)
	The rectangle is XORed into screen space, respecting the clipping
	  region, with edges of the width specified with "FG_BOXDEPTH"
	  (see AX=0007h) (default = 1 is set by "FG_SETMODE")
	This function has no effect in text modes
SeeAlso: AX=0006h,AX=0007h,AX=0021h,AX=0022h,AX=0051h,AX=0055h,AX=0090h