Pages, using two different OS versions.
If I save a Pages file, in Big Sur, will I be able to open it with Pages, under Catalina? My iMac cannot be upgraded to Big Sur, so I'm wondering if I'm better off keeping Catalina on my MacBook Air, rather than upgrading to Big Sur (my iMac is from 2012, and my MacBook Air is from 2017).
iMac 21.5″, macOS 10.15