I edited the custom markup box on the Admin/General/Site Identity page. Now, every page accessed when logged in as admin returns only the top of the page. Viewing the page's source, the page only loads to div id="sitehead" then nothing.
The result is that, when logged in as either of our two admin accounts, there are no visible pages.
However, when logged in as a registered user or when not logged in at all, all pages to which those authorities have permissions show up.
I may have exceeded the 250-character limit for the custom code field, but I don't think so. Perhaps it's just bad HTML.
In any case, I can't admin the site and that's bad.
Is the custom code in a file I can delete? Or is it stored in the database?
I'm hoping for code in a file because the guy with the Keys to the Kingdom is on vacation and I'd rather fix this without having to dig around too deeply.