I just want to find a way to let Electrum cold wallet display more change address. A friend teach me a way to display more address by command wallet.storage.put('gap_limit', 50) and wallet.storage.write(). It's worked. There must be some command to display more change address. In lower version Electrum, I knew the commands , but I forgot now. And I did't find them in http://docs.electrum.org/en/latest/.