:s/\(|\s.*\)\@<=\s/\&#8201;/g

• zf#j creates a fold from the cursor down # lines.
• zf/string creates a fold from the cursor to string .
• zj moves the cursor to the next fold.
• zk moves the cursor to the previous fold.
• zo opens a fold at the cursor.
• zO opens all folds at the cursor.
• zm increases the foldlevel by one.
• zM closes all open folds.
• zr decreases the foldlevel by one.
• zR decreases the foldlevel to zero – all folds will be open.
• zd deletes the fold at the cursor.
• zE deletes all folds.
• [z move to start of open fold.
• ]z move to end of open fold.

via https://gist.github.com/lestoni/8c74da455cce3d36eb68

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Neovim docs