text: "[-cff options: -E, -F, -O, -S, +T, +V, -Z, -b, -d]\n"
  "+/-E    optimize for embedding\n"
  "+/-F    optimize Family zones\n"
  "+/-O    optimize for ROM\n"
  "+/-S    subroutinize\n"
  "+/-T    optimize charstrings\n"
  "+/-V    remove path overlaps. Default is to not remove overlaps\n"
  "+/-Z    do not/do decompose SEAC and dotsection operators\n",
  "+/-b    preserve glyph order\n"
  "+/-d    enable duplicate hintsubs warnings\n"
  "-n      remove hints\n"
  "-std    force the output font to have StandardEncoding\n"
  "-no_futile remove futile subrs during subroutinization\n"
  "\n"
  "CFF mode writes a CFF conversion of an abstract font. The precise form of the\n"
  "CFF font that is written can be controlled to a limited extent by the options\n",
  "above. The feature is enabled by the + form of the option and disabled by the \n"
  "- form of the option.\n"
  "\n"
  "The +E (embedding) option removes purely descriptive keys from the font without\n"
  "affecting its rendering. The +F (Family) option removes FamilyBlues and\n"
  "FamilyOtherBlues from hint dictionaries if they are identical to the BlueValues\n"
  "and OtherBlues, respectively. The +O (optimize) option removes the same keys as\n"
  "the +E option as well as performing some charstring optimizations that are\n",
  "suitable for fonts embedded in printer ROMs. The +T (testing) option performs\n"
  "charstring optimizations that are normally desirable but prevent bitmap\n"
  "comparisons from being performed on some charstrings. These optimizations may\n"
  "be disabled using the -T option. Note: +/-T implies +/-F. The -Z\n"
  "option converts charstrings using the seac operator into a regular path by\n"
  "combining the component glyphs specified in the charstring and removes the\n",
  "dotsection operator. Normally glyphs are sorted to reduce the CFF data size.\n"
  "The +b option forces the original glyph order to be preserved (with the\n"
  "exception of the .notdef glyph which is always assigned glyph index 0). The +d\n"
  "(debug) option enables duplicate hintsubrs warnings on stderr.\n"
  "\n"
  "For example, the command:\n"
  "\n"
  "    tx -cff +d -a rdr_____.pfb\n"
  "\n"
  "converts the font file \"rdr_____.pfb\" to CFF, with charstring warnings enabled,\n"
  "and writes the results to the file \"rdr_____.cff\".\n"
  