- [n]ormal key
- [N]ormal key with implicit modifier, like '%' or '@'
- [L]ayer key
- [M]odifier key
- [D]ualRole key
[n] : emit KC, repeat as long as pressed [N] : emit KC+Mod repeat as long as pressed [L] : select layer active as long as pressed [M] : emit Mod active as long as pressed [D] : wait dual delay - if released within limit, emit as [n/N] keycode else emit [M] or select [L]