Changing something small, on the fly, is possible in WordPress by navigating to Appearance -> Editor. It’s a great tool if you need a web guru on your server but you don’t want to give him access to your backend. But them he calls you and explains that he is getting the following error when trying to edit your theme files using the WordPress editor

"You need to make this file writable before you can save your changes. See the Codex for more information."

Ok, sure, I’ll check the codex. But it still doesn’t work, even with permissions of 777 (or -rwxrwxrwx)!
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