""" Package encompassing platform agnostic gui commands and updating

    The :mod:`~.gui` subpackage provides a thin app manager framework:

        - lightweight app manager, :mod:`~.appmanager`
        - functions implementing basic commands, :mod:`~.appcmds`
        - interactive functions using ipywidgets, :mod:`~.dashboards`
        - interactive GUI actions, :mod:`~.actions`
        - ray-optics file (.roa) reader, :mod:`~.roafile`
        - GUI utility functions, :mod:`~.util`

"""
