OK I swear I am not an idiot. I still don't get it! What was that supposed to mean?
And don't make me come back to explain it further.
5.56mm
That's how you "call" someone you know, and say...
"Hey, I found an interesting article, and I thought you would find it interesting too !!..
Then they click on the message header and are linked to the article..
Then they either congratulate you for knowing them so well, or flame you for wasting their time.. ( /joke )
Hope this is a little more "explanatory"..
Merry Christmas...