Provided by: nauty_2.8.9+ds-1_amd64 
      
    
NAME
       nauty-dretog - read graphs in dreadnaut format
SYNOPSIS
       dretog [-n#o#sghq] [infile [outfile]]
DESCRIPTION
              Read graphs in dreadnaut format.
       -o#    Label vertices starting at # (default 0).  This can be overridden in the input.
       -n#    Set the initial graph order to # (no default).  This can be overridden in the input.
       -g     Use graph6 format (default for undirected graphs).
       -z     Use digraph6 format (default for directed graphs).
       -s     Use sparse6 format.
       -h     Write a header (according to -g, -z or -s).
       -q     Suppress auxiliary output.
              Input consists of a sequence of dreadnaut commands restricted to:
       n=#    set number of vertices (no default) The = is optional.
       $=#    set label of first vertex (default 0) The = is optional.
       d      indicate graph will be directed
       $$     return origin to initial value (see -o#)
       ".." and !..\n
              comments to ignore
       g      specify  graph  to  follow  (as  dreadnaut format) Can be omitted if first character of graph is a
              digit or ';'.
       q      exit (optional)
nauty 2.8.9                                      September 2024                                  NAUTY-DRETOG(1)