IsVESA()

         Detects if the graphic system is VESA compatible

    Syntax:

         IsVESA() -> lVESA

    Description:

         It returns a logic indicating if the system is compatible with the
         standard placed by the VESA committee. If your graphic card is not
         VESA compatible contact your distributor and there probably will
         be a driver that allows to emulation VESA.

    Return:

         A logic indicating if it is compatible

    Example:

         If IsVESA()
           ? VESAVer()
         EndIf