The NEO keyboard layout (https://neo-layout.org/ https://neo-layout.org/) which I’m using for over a decade, has a similar concept of a number of additional lay

The NEO keyboard layout (https://neo-layout.org/ https://neo-layout.org/) which I’m using for over a decade, has a similar concept of a number of additional layers. This is quite handy for having a bunch of special characters for programming readily available (hover over the layers on https://neo-layout.org/ https://neo-layout.org/ to see). For any other modal use-cases (e.g. resizing windows, changing music volume), I use i3’s modes: https://i3wm.org/docs/userguide.html#binding_modes https://i3wm.org/docs/userguide.html#binding_modes