NAME
      rlepatch - patch smaller RLE files over a
      larger image.

 SYNOPSIS
      rlepatch [ -o outfile ] infile patchfiles...


 DESCRIPTION
      Rlepatch puts smaller RLE files on top of a
      larger RLE image.  One use for rlepatch is to
      place small "fix" images on top of a larger
      image that took a long time to compute.
      Along with repos(1), rlepatch can also be
      used as a simple way to build image mosaics.

      Unlike rlecomp(1), rlepatch does not perform
      any arithmetic on the pixels.  If the patch
      images overlap, the patches specified last
      cover those specified first.

      If the input files each contain multiple
      images, they are treated as streams of images
      merging to form a stream of output images.
      I.e., the nth image in each input file
      becomes part of the nth image in the output
      file.  The process ceases as soon as any
      input file reaches its end.

 OPTIONS
      infile
           The background image will be read from
           this file. If input is to be taken from
           stdin, "-" must be specified here.

      -o outfile
           If specified, output will be written to
           this file, otherwise it will go to
           stdout.

 SEE ALSO
      rlecomp(1), crop(1), repos(1), urt(1),
      RLE(5).

 AUTHOR
      John W. Peterson, University of Utah.

 BUGS
      Rlepatch uses the "row" interface to the RLE
      library.  It would run much faster using the
      "raw" interface, particularly for placing
      small patches over a large image.   Even
      fixing it to work like rlecomp (which uses
      "raw" mode only for non-overlapping images)
      would make a major improvement.














































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