Neovim folds

it is a built-in feature in Neovim; enables you to quickly navigate a long document by hiding them and opening them when you want
some keybindings for managing folds

Keymap Description

zf Create a fold.

zA Toggle a fold recursively.

zM Close all folds.

zR Open all folds.

zj Move one fold down.

zk Move one fold up.
while in insert mode, there are no folds under your cursor so you can see what you type
while manually managing folds can be tedious, Neovim does have a way to automatically manage folds for you; this is dictated through the foldmethod variable; for more information for the following methods, see fold-${VALUE} with the Neovim help system
- with manual value, no additional actions are done
- with marker value, a fold will be created ala-HTML markers
- with expr value, a fold will be managed through its fold level evaluated from foldexpr function; certain tools like nvim-treesitter takes advantage of this to arrange the code through its blocks, scope, etc.