Games tend to contain a lot of NPCs and other things (Handouts) for players to keep track of. And while I, as the GM, try my best to provide useful information in the descriptions, my players have things they specifically want to keep track of about these people and things. Sometimes secretly from the other players. So what if they had a section similar to the "GMs notes" for every character and handout where they can enter things only visible to themselves and the GM? Right now they enter stuff into a handout they each have, but with 50+ NPC to keep track of, that's becoming unwieldy to say the least...
