How do I type accented letters?

Generically speaking (and including within LB - I tried it) if you hold down the ALT key and type a series of numbers from the numeric keypad you will get alternatives from what are known as “character maps”.
Here’s a site with an index.
If you hold ALT and type 130 you’ll get é. If you type “130” from the top row of keys (above the QUERTY part) - you’ll get 130. You must do it from a numeric keyboard.
Oh yes, NUMLOCK must be on.

Hope this helps