I had no intention of being flippant, whatsoever. I actually thought I was being helpful. (still not being flippant).
I also assumed that with your years of testing experience, that you were already aware of html coding tags, and therefore didn't need to explain it in words that a non-computer person would understand. Since it is "standard" html syntax, anyone can google actual documentation as needed.
The tags can be on the same line, or they can span lines. But they can not be nested (do I need to explain "nesting"? </flippant>).
And you've miscounted. There are 4 characters to start the tag, but only 3 characters to end it.
I type slowly. I prefer to be brief when possible. I thought you would understand this too. (sorry, being flippant again).