The thing I discovered and this may of been obvious to some of you but I only discovered this whilst playing last night. When ive been in Dungeons and come across a wall with the 3 spinning circles with a symbol on each of the rings to align in the right order I was literally trynig all of the possible combinations, looking around for clues on walls ceillings etc.. this was taking a very long time. So looking in the list of items I found the relevant claw key that is used to open the door and so having a good close up look at it I notice the combination of the symbols is on the back of the claw lol.