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       xbmtopbm - convert an X11 or X10 bitmap into a portable bitmap
       xbmtopbm [bitmapfile]
       Reads  an  X11  or  X10 bitmap as input.  Produces a portable bitmap as
       output.
       pbmtoxbm(1), pbmtox10bm(1), pbm(5)
       Copyright (C) 1988 by Jef Poskanzer.
                                31 August 1988                     xbmtopbm(1)