def ScenAttrs( scen ):
    """Make a dictionary describing the attributes of a scenario"""
    scenAttrs = dict( scen = scen, is_neutral = scen.is_neutral(), isNeutral = scen.isNeutral() )
    if not scen.is_neutral(): scenAttrs.update( mutAge = scen.mutAge,
                                                mutPop = scen.mutPop,
                                                mutFreq = scen.mutFreq )
    return scenAttrs