To share a folder on my Local Area Network, I used these instructions, and just had to click the box saying "Share this folder". Great.
Then I changed my mind, so I thought in order to UNDO that, I just needed to un-tick the box. Nope. Because now that I've installed Samba, the box doesn't exist anymore. Instead of the "Local Network Share" tab, there are tabs for "Permissions", "Notes", "Access Control List", "Extended User attributes". A whole bunch of really complicated stuff, and nowhere is there any box to just say "DON'T share this folder anymore".
Theoretically, I could just change permissions, but that's missing the point. Somewhere, a setting has been saved that says "This is a folder I want to share". Where is it, and how do I undo that?