INT 62 u - FGDRIVER v3.03 - "FG_RECT" - DRAW UNFILLED RECTANGLE IN SCREEN SPACE
        AX = 0080h
        BX = left edge column
        CX = right edge column
        DX = top edge row
        SI = bottom edge row
Notes:  For FGDRIVER v1.10, this function was "FG_MOUSELIM" (see AX=0062h);
          "FG_RECT" was AX=002Ah
SeeAlso: AX=0006h,AX=0011h,AX=0021h,AX=0031h

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