INT 62 u - FGDRIVER v3.03+ - "FG_BOX" - DRAW UNFILLED RECTANGLE
	AX = 0006h
	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 drawn in 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=0007h,AX=0008h,AX=000Ch,AX=0016h,AX=001Dh,AX=0026h,AX=0051h
SeeAlso: AX=0055h,AX=008Fh