"sometimes headers get that do long"

....Why in the world is this message displayed in a screen tip that pops up whenever I put the mouse over the keyword "long"? This kinda freaked me out...and it doesn't seem to make a lot of sense. It has no capitalization or puncuation either....it's really weird.

I'm using Dev-CC 4.9.9.2.

I get the same thing in 4.9.9.1, and I'm just as confused as you. Perhaps it's a bug. I'll try to do some research.