Topic on Glossary talk:Multi-monitor
I've extensively extended the initial description, as well as added a section about super-wide (which this is not).
While this glossary page is meant to focus on multi-monitor as a general concept, the Editing Guide describes more specifically how it should be tracked on PCGW. Right now, PCGW typically requires a game to support 3+ more spanned displays to be regarded as having multi-monitor support, even though technically speaking 2+ configurations (super-wide) is probably more common nowadays.
MASSIVE THANKS!