The process of opening text in an external editor and saving the edited back to the web page works flawlessly. However, there is one issue that makes this pretty unusable for me: Even though the character set is UTF-8 (default), any non-ASCII characters in the text saved back to the browser get replaced with weird characters—diacritics (special characters in other languages), even typographic quotation marks. This happens with any editor I've tried (including Vim, Notepad, LibreOffice), so it's clearly a matter of this addon, not of the external editor. I'm still assuming this is a matter of settings, as no one else seems to have this issue. There even is a five-star review in Japanese below... However, when I copy and paste the Japanese text into an external editor and save it back to Firefox with this addon, all characters are replaced by question marks. Doh. Any help appreciated!