Don't know about you, but when I spellcheck a file in Word or PowerPoint, I often click the Ignore All button to tell the spellchecker to skip URLs or technical terms. I was doing exactly that a few minutes ago when, suddenly, I got this warning:
Now, does this mean that the spellchecker has hit some kind of internal limit? Or is it telling me that I'm playing too fast and loose with the Ignore button? More importantly, what am I supposed to do with this message?
Moral: When designing an HMI, always remember that someone like me is at the receiving end of equation. Someone who doesn't know everything you do. Someone who would appreciate just a little more (unambiguous) information.