error: --help
usage: hp2ps-ghc-9.14.1 -b -d -ef -g -i -p -mn -p -s -tf -y [file[.hp]]
where -b  use large title box
      -d  sort by standard deviation
      -ef[in|mm|pt] produce Encapsulated PostScript f units wide (f > 2 inches)
      -g  produce output suitable for GHOSTSCRIPT previever
      -i[+|-] sort by identifier string (-i+ gives greatest on top)
      -M  multi-page output (key separate from graph)
      -mn print maximum of n bands (default & max 20)
          -m0 removes the band limit altogether
      -p  use previous scaling, shading and ordering
      -s  use small title box
      -tf ignore trace bands which sum below f% (default 1%, max 5%)
      -y  traditional
      -c  colour output