> ocr-transform hocr page --help-args
        Usage: see http://www.saxonica.com/documentation/index.html#!using-xsl/commandline
        Options available: -? -a -catalog -config -cr -diag -dtd -ea -expand -explain -export -ext -im -init -it -jit -l -lib -license -m -nogo -now -ns -o -opt -or -outval -p -quit -r -relocate -repeat -s -sa -scmin -strip -t -T -target -TB -threads -TJ -Tlevel -Tout -TP -traceout -tree -u -val -versionmsg -warnings -x -xi -xmlversion -xsd -xsdversion -xsiloc -xsl -y --?
        Use -XYZ:? for details of option XYZ
        Params: 
          param=value           Set stylesheet string parameter
          +param=filename       Set stylesheet document parameter
          ?param=expression     Set stylesheet parameter using XPath
          !param=value          Set serialization parameter

> ocr-transform gcv hocr --help-args
    Extra arguments: <width> <height>

> ocr-transform page alto --help-args
    page-to-alto options:
  -l, --log-level [OFF|ERROR|WARN|INFO|DEBUG|TRACE]
                                  Log level
  --alto-version [4.2|4.1|4.0|3.1|3.0|2.1|2.0]
                                  Choose version of ALTO-XML schema to produce
                                  (older versions may not preserve all
                                  features)
  --check-words / --no-check-words
                                  Check whether PAGE-XML contains any Words
                                  and fail if not
  --check-border / --no-check-border
                                  Check whether PAGE-XML contains Border or
                                  PrintSpace
  --skip-empty-lines / --no-skip-empty-lines
                                  Whether to omit or keep empty lines in PAGE-
                                  XML
  --trailing-dash-to-hyp / --no-trailing-dash-to-hyp
                                  Whether to add a <HYP/> element if the last
                                  word in a line ends in "-"
  --dummy-textline / --no-dummy-textline
                                  Whether to create a TextLine for regions
                                  that have TextEquiv/Unicode but no TextLine
  --dummy-word / --no-dummy-word  Whether to create a Word for TextLine that
                                  have TextEquiv/Unicode but no Word
  --textequiv-index INTEGER       If multiple textequiv, use the n-th
                                  TextEquiv by @index
  --textequiv-fallback-strategy [raise|first|last]
                                  What to do if selected TextEquiv @index is
                                  not available: 'raise' will lead to a
                                  runtime error, 'first' will use the first
                                  TextEquiv, 'last' will use the last
                                  TextEquiv on the element
  --region-order [document|reading-order|reading-order-only]
                                  Order in which to iterate over the regions
  --textline-order [document|index|textline-order]
                                  Order in which to iterate over the textlines

> ocr-transform textract page --help-args
    textract2page arguments: <image-file>
    textract2page options: