print_partition - print the "dot" format describing the partition graph
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   print_partition [-h] <file>

   Write a file in the format taken by the tool dot. Dot is a tool that, given
   a description of a graph in a certain format, produces a postscript print of
   the    graph.    For    more    information    about   dot   look   in
   [1]http://www.research.att.com/sw/tools/graphviz.

   If no argument is specified on the command line, the output is written to
   the standard output.

   Command options:

   -h
          Print the command usage.

   <file>
          Name of file where the partition is to be written in "dot" format.
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   Last updated on 20100410 00h02

References

   1. http://www.research.att.com/sw/tools/graphviz