Realms tutorial - Add a command to re-open the written book after closing it

I made a bug report related to this that was denied. I think this would be a good feature to add, so I am making it as a suggestion. It would be good if there was a way to re-open the written book after closing it. If I am being attacked, I may have to close the written book to kill the mobs or get to a safer place. Once I am in a safer place, then I can't re-open the book to read the instructions on what to do next. This would be good to address in some way