How do I enable captions? Currently, the caption appears only when hovering over the thumbnail. I saw a reference in the FAQ to setting the caption attribute to 'true' and I see a line in the Edit Plugin window that reads "'caption' => 'false', // false = default". But below that window I see
"You need to make this file writable before you can save your changes. See the Codex for more information."
And I'm finding the Codex Changing File Permissions pretty unfathomable. Is there a simple way to do this?
My blog is self-hosted. Theme is Twenty-Ten.