Hi Sam.
What do you mean with "expand"? Maximize window? It's not a problem. Remember, Sheil recommends you take 1280x800 as a base resolution, so the examinator don't have to use scrollbar. On
his blog, Sheil says you could presume a "1680 x 1050 for a 21 inch monitor". I'm not sure it's a good advice, but it came from Sheil. I followed the 1280x800 as base, but still the examinator would have to use his vertical scrollbar in some diagrams.