It says it's based on Kakoune, so you could look into kak docs instead, which describe difference from Vim, and it is indeed different. If the old joke "plan9

It says it's based on Kakoune, so you could look into kak docs instead, which describe difference from Vim, and it is indeed different. If the old joke "plan9 is more Unix than Unix" is true, then "Kakoune is more vi than vim". There are similarities but it is a different beast.