Miscellany

        for trove in troves:
            make_responsive()
            if ":" not in trove.trove:
                if not list.get(trove.trove):
                    list.update({trove.trove: []})
            else:
                sep = trove.trove.find(":") + 1
                key = trove.trove[:sep - 1]
                value = list.get(key)
                if not value:
                    value = []
                    value.append(trove.toTuple())
                    list.update({key: value})