Examples of use:
This turns comments for that particular page off.
Comments for pages under that directory will also be turned off, ie. where comments are turned off on /main/
, pages found in /main/more
and so forth will also have their comments turned off.
This turns comments for that particular page on.
Comments for pages under that directory will also be turned on and so forth (see above for further explanation). Especially useful when you want comments disabled on a particular page that does not require user input.
You can use either options at any time on any page.