INT 62 u - FGDRIVER v3.03 - "FG_ERASE" - CLEAR THE ACTIVE VIDEO PAGE
        AX = 0026h
Note:   For FGDRIVER v1.10, this function was "FG_DRAWREL" (see AX=001Eh);
          "FG_ERASE" was AX=001Eh
        This function sets each pixel to 0 in graphics modes, each character
          cell to a blank with a gray foreground attribute in text modes
SeeAlso: AX=0027h,AX=0029h,AX=002Bh

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