to save folds: :mkview

to restore folds: :loadview

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

zc closes a fold at the cursor

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