Shows the last price of either the spot or futures market on Binance, for the current coin. It shows futures if you are in a spot market, and spot if you are in futures.
Currently this only works for USD stable coin pairs (BUSD, USDT, USDC, ...). I don't plan to add COIN future pairs, it's not useful to me.
Additionally, it allows you to show the lowest and highest traded price (in the opposite market you are currently on: spot/futures) for a given period, and the respective chart, if you are into that sort of thing.