Does not work in Opera. If you save as type: text, the text saves OK. But if you save as html, the file just contains " <html contenteditable>" Also, HOW

Does not work in Opera. If you save as type: text, the text saves OK. But if you save as html, the file just contains " <html contenteditable>" Also, HOW to open an existing file while retaining 'contenteditable' mode? Everything I try alters the URL field, so returning the browser to standard display-only mode.