"Suggest Edits" functionality

Title pretty much self explanatory, as this feature is called that in Microsoft Office, Google Docs, and Notion (and probably everywhere else that has the feature).
Basically means people can write edits to a document in-line, without it being destructive of what was there before. Makes it easier for the document owner to see the before and after and accept/decline the suggested edit.

Basically similar to comments (which is how notion and google docs used to do things by default years ago) but is the updated equivalent.