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       qrttoppm  -  convert  output  from  the  QRT ray tracer into a portable
       pixmap
       qrttoppm [qrtfile]
       Reads a QRT file as input.  Produces a portable pixmap as output.
       ppm(5)
       Copyright (C) 1989 by Jef Poskanzer.
                                25 August 1989                     qrttoppm(1)