My T usually write a few things during our sessions but not much. If I have had a med change or have expressed some SI or SUI thoughts recently he will go through questions about sleep, appetite, and all the rest and made notes about my responses. Otherwise he seems to just jot down one or two things in the average session. At times I will freeze when I see him writing because I can't for the life of me figure out what I said that was noteworthy. lol
Although I would love to ask to see my notes I am sure he would be annoyed and I probably am better off not knowing what he writes.