** Overview of 'harpwise develop'

  This mode is useful only for the maintainer or developer of
  harpwise; it is therefore not listed in the general usage
  information.

  The required additional argument specifies a task to perform; it can be
  one of:

    - docs-make-org-txt:
      process template from docs/erb-org and produce files
      in _org and _txt

    - docs-make-html:
      process org-files with org-publish from docs/_org and produce
      file in _html

    - docs-all:
      all docs-xyz extras one after the other

    - selftest:
      perform selftest with special regard to the environment

    - unittest:
      unittest for features, that cannot easily be tested within the
      main test program

    - widgets:
      excercise selected widgets to be tested

    - lickfile:
      load and parse a lickfile

    - check-frequencies:
      recalculate and check frequencies for current set of samples

    - read-scale-with-notes:
      read given scale (first arg) from file (second arg)

    - dump:
      dump internal data structures to stdout
