The question marks mean that in the database the document is not stored well.
I just checked it, and the rollback does not work well. Let me debug this a little on my system.
Yes, I do mean it.
Roll-back an older version which contain Chinese characters from the history.2007/3/16, Sergiu Dumitriu < sergiu.dumitriu@gmail.com >:Ning, what do you want to say with "roll-back"? As in roll-back an older version from the history?