And doesn't it just make you furious when you miss something even after you have read it at least a dozen times??
Ah, but I've realised over the years that we don't miss them. It's just that the little beggers breed behind your back soon as you close down the file. And then when you open it up again, there they are, large as life, where they never were previously.
Really - it's the only explanation.
LabRat