def select_first(only_selected_strokes: bool=False, extend: bool=False):
    """Select first point in Grease Pencil strokes 

    :param only_selected_strokes: Selected Strokes Only, Only select the first point of strokes that already have points selected 
    :type only_selected_strokes: bool
    :param extend: Extend, Extend selection instead of deselecting all other selected points 
    :type extend: bool
    """
    pass
