The compose key is a concept, not a physical key :)<p>If your operating system supports it, you can bind any key to the compose key, such as the right alt key.<p>Here&#x27;s a link to several options to get software support: <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Compose_key#Software_support" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Compose_key#Software_support</a>.