The tags, <html> and </html>, are examples of paired tags. The second one is like the first one except that it begins with a / symbol. A pair of tags affects how a browser will display the text between the first tag and the second tag. Leaving out the second tag usually changes the display of the rest of the document.
A Redline. Hot Wheels car is one that was manufactured within the first ten years of production, 1968 to 1977. The term redline derives from the fact that, during that period, the cars were manufactured with a red stripe on the tire.
Hot tire is sign of a problem. Question: I've got a 2005 Town & Country minivan. While we were out driving around, I noticed the right front wheel got very hot. So hot I couldn't touch the wheel. It smelled of burning, similar to electrical smoldering. The left front was warm, but not hot.