Having trouble hearing what NPC's are saying when you're not in a direct conversation with them? Then this is the guide for you!
While in the game mouse over the chat window (either while in your inventory or by pressing <.> to toggle the cursor) and clicking on the plus <+> next to the word chat this brings up a menu box, tick the Box for NPC under filters and name the window whatever you want then press alt to exit.
You now should be able to read what NPC's say behind your back, enjoy.