pcxPalette()

         Returns the color palette of the PCX

    Syntax:

         pcxPalette ( cFile ) -> cPalette

         cFile : Name of the PCX file

    Description:

         This function returns the color palette of the PCX file if it
         is of any sense. The return value has no meaning if the video card
         is monochrome.

    Return:

         A string of 48 bytes with the colors palette or Nil if the file
         does not exist or it is not a PCX.

    Example:

         cPalette := pcxPalette ( "c:\fast\lib\fast.pcx" )