Revision mode?

Hi - I’ve seen some friends talking about revision mode, accessed under the format menu. However, I can’t find it either there, or any mention of it in the menu. Is this because it’s only on Mac? Or am I missing it. And if it is only on Mac, please can we have it on Windows too? Thank you!

Yes, this has yet to be added to the Windows version.

Do you think it will be…soon? It would be so useful.