Hi, I'm moving over to Affinity Photo from Photoshop, which I primarily use for making comics. I was totally sold on the text tool and the quality of the brushes, but now that I'm getting into really using it I'm having trouble finding a couple of equivalents to things I did in Photoshop a lot, specifically being able to clear or fill the pixels which are currently selected.
In Photoshop, backspace will delete the pixels that are currently selected (or more precisely set their alpha to 0), and option-backspace will solid-fill the selection with the current foreground color. Both of these are very useful for a bunch of things in drawing. If I could find equivalent commands for this in the menu I'd be able to set my keyboard shortcuts accordingly, but I can't find anything there, and searching on the various phrases I can think of in both the online help and in the forum is turning up nothing.
Does Affinity Photo not have these functions? Or are they just called something else that I'm not finding in any of the menus?
And, relatedly, is there a way to make the magic wand tool sample from all layers rather than the current layer? The "selection brush" tool does allow that but that doesn't quite serve my needs for doing flat fills in a comic. (Alternately, being able to do a bucket fill that samples all layers would be helpful!)