new_contents: __all__ = [
      "epifm_handler",
      "effects_handler",
      "camera_handler",
      "tirfm_handler",
      "pmt_handler",
      "palm_handler",
      "pointscan_confm_handler",
      "linescan_confm_handler",
      "frap_handler",
      "lscm_handler",
      "flip_handler",
      "fcs_handler",
      ]
  
subject: Add __all__ into __init__.py