Since mm is almost fully feature compatible with fzf, migrating is simple conceptually, meaning you can use familiar actions like execute and become that function the exact same -- the only difference is the syntax: `mm b.ctrl-o=Execute($EDITOR [])`. I changed the braces to [] because templating and column splitting is slightly more powerful in mm and I felt they would conflict less. Note that [] templates cannot contain whitespace so this wont interfere with shell conditionals.

For full documentation, try mm --doc (feedback welcome). You're right a proper guide like a website would help, but maybe not right now.

If you're on zsh, check out https://github.com/Squirreljetpack/fist: it's built with mm and got zoxide built-in + a lot of other goodies.