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

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

The following single-character options are accepted:
	With arguments: -f -l -s -t
	Boolean (without arguments): -p

Options may be merged together.  -- stops processing of options.
Space is not required between options and their arguments.
  [Now continuing due to backward compatibility and excessive paranoia.
   See 'perldoc Getopt::Std' about $Getopt::Std::STANDARD_HELP_VERSION.]
    pdfstamp [-f font] [-l locx,locy] [-s size] infile string
Adds the given string to the infile .pdf file at the given location, font and
size.

    -f font     Font name from the standard fonts [Helvetica]
    -l locx,locy    Location in points from bottom left of page [0,0]
    -p          Use the page number as the string
    -s size     Font size to print at             [11]
    -t ttfile   TrueType font file to use (instead of -f)