Launch any app, or bring back the right ctrl key.
My (slightly old) Toshiba Satellite has the Fn key placed between left Ctrl & Alt, where a Windows key would normally be. The Fn key is used in key combinations to control video out, lock the laptop, ...
When the keyboard was first designed, the intention was to keep every key in the right position as per its estimated usage. However, that was in the typewriter era. The common uses have changed with ...