The article didn't mention surface conditions. I have encountered snow covered taxiways with taxiway lights plowed over! Most Jeppesen airport diagrams, depicted in black and white and in shades of grey have ambiquously positioned taxiway identifiers. Identifiers are positioned beside the taxiways and intersections instead of directly over them. This can cause confusion, especially when parallel taxiways and intersections are involved. With all the high tech printing techniques available today, Jeppesen is very slow to improve its product line. <img border="0" title="" alt="[Frown]" src="frown.gif" />