/usr/bin/ttffeatparms version [unknown] calling Getopt::Std::getopts (version 1.15 [paranoid]),
running under Perl version 5.44.0.

Usage: ttffeatparms [-OPTIONS [-MORE_OPTIONS]] [--] [PROGRAM_ARG1 ...]

The following single-character options are accepted:
	With arguments: -c
	Boolean (without arguments): -h -d

Options may be merged together.  -- stops processing of options.
Space is not required between options and their arguments.

For more details run
    perldoc -F /usr/bin/ttffeatparms
  [Now continuing due to backward compatibility and excessive paranoia.
   See 'perldoc Getopt::Std' about $Getopt::Std::STANDARD_HELP_VERSION.]
Usage:
    ttffeatparms [-d] [-c control.xml] infile.ttf outfile.ttf

    Opens infile.ttf for reading, deletes existing feature parameters and/or
    adds new ones based on control file values, then writes the modified
    file to outfile.ttf.

Options:
      -c file    Specifies the xml control file to use
      -d         Deletes all GSUB feature parameters from the font
      -h         Help

    If both -c and -d are specified, all existing parameters are deleted
    prior to applying the control file values.