What does $rsold contain in Row_Updating event?

hi,When you write a script in the Row_Updating event, you can access to $rsold which is the old recordset before the update.
I checked the doc file, but there is no information of what really contains $rsold array value…What does $rsold contain ?
case 1 : the realtime data from the database table once the user click on UPDATE button
or
case 2 : the old data on the user screen when he first displayed the edit view (which can have been changed by other users during the edit time)any idea ?Thank you for your time to answer me.

It seems the answer is case 2.