load_file_from_source_or_save_directory('icons.lua')

      load_file_from_source_or_save_directory('text_tests.lua')
    load_file_from_source_or_save_directory('run_tests.lua')

    load_file_from_source_or_save_directory('drawing.lua')
      load_file_from_source_or_save_directory('geom.lua')
      load_file_from_source_or_save_directory('help.lua')
    load_file_from_source_or_save_directory('drawing_tests.lua')
  else

  elseif Current_app == 'source' then

    load_file_from_source_or_save_directory('source_file.lua')
    load_file_from_source_or_save_directory('source.lua')
      load_file_from_source_or_save_directory('commands.lua')
      load_file_from_source_or_save_directory('source_edit.lua')
      load_file_from_source_or_save_directory('log_browser.lua')
      load_file_from_source_or_save_directory('source_text.lua')
        load_file_from_source_or_save_directory('search.lua')
        load_file_from_source_or_save_directory('select.lua')
        load_file_from_source_or_save_directory('source_undo.lua')
        load_file_from_source_or_save_directory('colorize.lua')
      load_file_from_source_or_save_directory('source_text_tests.lua')
    load_file_from_source_or_save_directory('source_tests.lua')

  else
    assert(false, 'unknown app "'..Current_app..'"')

  else
    assert(false, 'unknown app "'..Current_app..'"')