
  plot_atlas
  Plot line position vs strength in 'atlas' style.

  usage:
  plot_atlas [options] files

  -h          help
  -c char     comment character(s) used in files (default '#', several characters allowed)
  -I          vertical impulses (bars) to indicate line strength (default: use '+')
  -g int      (max.) number of graphs per page with one molecule per graph
              (default: plot all lines (of all molecules) in one graph)
  -o          output (print) file (default: interactive xmgr plot)
  -v          verbose

  NOTE:
  the current implementation uses the xmgr plotting tool (a.k.a. ACE/gr, further developed into the GRACE tool).
  If you prefer the new xmgrace, use the -v option (verbose) to print the command to the screen and replace xmgr -> xmgrace.
  (Unfortunately the option syntax is slightly different, but the "all in one" plot should work as before.)

