{not available when compiled without the |+folding| feature} Specifies for which type of commands folds will be opened, if the command moves the cursor into a closed fold. It is a comma-separated list of items. NOTE: When the command is part of a mapping this option is not used. Add the |zv| command to the mapping to get the same effect. (rationale: the mapping may want to control opening folds itself)

item		commands ~
all		any
block		"(", "{", "[[", "[{", etc.
hor		horizontal movements: "l", "w", "fx", etc.
insert		any command in Insert mode
jump		far jumps: "G", "gg", etc.
mark		jumping to a mark: "'m", CTRL-O, etc.
percent		"%"
quickfix	":cn", ":crew", ":make", etc.
search		search for a pattern: "/", "n", "*", "gd", etc.
		(not for a search pattern in a ":" command)
		Also for |[s| and |]s|.
tag		jumping to a tag: ":ta", CTRL-T, etc.
undo		undo or redo: "u" and CTRL-R

When a movement command is used for an operator (e.g., "dl" or "y%") this option is not used. This means the operator will include the whole closed fold. Note that vertical movements are not here, because it would make it very difficult to move onto a closed fold. In insert mode the folds containing the cursor will always be open when text is inserted. To close folds you can re-apply 'foldlevel' with the |zx| command or set the 'foldclose' option to "all".