There was a graphical off track ETP question which you had to plot on an oceanic enroute chart. From memory it was HNL - AKL with an off track to Nandi required. The other one I recall was plotting a track on the same chart between two points (one was a VOR the other a reporting point) and then working out tracks etc. One part of that question asked you to find the convergence angle between the two points by measurement - which is something I hadn't seen before. I reckon the way to do that one was to draw a meridian of longitude through each point and then measure off using the Douglas protractor. Having said that, I'm not sure if that was the correct technique so if anyone else out there can shed some light please sing out!
Hope this helps.
IRD