I don't know! They said "collaborative" and they provided a link. I tried making some changes to test the collaboration and clicked the "save" button. It change

I don't know! They said "collaborative" and they provided a link. I tried making some changes to test the collaboration and clicked the "save" button. It changed the "last changed" to "now" and upon reload my changes were gone. It lied to me: my changes weren't saved! If I can't save a thing, I want to be explicitly told so!