Hold Ctrl or Alt to snap drawing to OHLC

There is already an existing feature to hold “shift” to create a 45° / 90° anchor point. Is there a similar feature where I can hold a key to have drawing anchors snap to a candle open high low or close? Even a snap to high and low would be extremely useful.

I know there is a snap mode that I can change, but it’s inconvenient to switch snap modes just for one drawing.