Not the parent, but that's the default place for the arrow keys on my Keyboardio Model 01. In Vim I can use them as-is, but on the Fn layer they're arrow keys.

Not the parent, but that's the default place for the arrow keys on my Keyboardio Model 01. In Vim I can use them as-is, but on the Fn layer they're arrow keys. The wsad cluster under Fn are mouse pointer keys. In fact I only have two complaints about the default layout, both pretty minor. One is that {}[]\| are on the Fn layer which took some adjustment for programming. The other is that with alt and space side by side, I sometimes hit alt+space which on macOS becomes some non-ASCII space character that looks just like ASCII space. A find and replace for that works wonders.