Are you familiar with compose key sequences? This is a way of extending the set of characters that can be directly typed by having predefined sequences of keys

Are you familiar with compose key sequences? This is a way of extending the set of characters that can be directly typed by having predefined sequences of keys that map to particular characters. They are started after pressing a so called "compose key". There are some examples in this article: https://en.wikipedia.org/wiki/Compose_key https://en.wikipedia.org/wiki/Compose_key