❡ I programmed this Plugin for the Glyphs font editor. It superimposes a group of predefined glyphs in the background of your letters. This can be both pretty helpful in the beginning of a design as well as at intermediate progress where quick proof overview is needed.
Currently it provides the basic characters of the Latin script. Cyrillic, Greek and diacritics are following in bit.
Find more infos about it and get it for free: ☛ here on GitHub. ☚