Enter to toggle chat

In some MMOs I’ve played, enter is used to toggle the chat window.  So if I wanted to get into the chat window, say “Morning, everyone.”, then get out of the chat window, I’d type Morning, everyone. .  If I didn’t want to close the chat window after typing, I’d omit the second enter.
It doesn’t look like enter is used for anything else currently.  Perhaps it could be used for that, as an alternative to clicking the chat line to open chat and clicking outside the chat to close it?

That’s a nice idea! Thanks onexused.