Toggle Layer’s Visibility

As of this writing, I do not know whether Krita has this ability or not (my guess is that it doesn’t). But I notice that I find myself turning on/off the layer beneath manually with a mouse click. This is so I can see how my inking looks like without the marker layer below. I hope there’s a way to put it into a shortcut so that I can toggle the below/above layer (or group) on and off. If not in this version, then future versions. 🙂