What is bond equivalent yield ?!

I got final bond/coupon right, but then it converts to this bond equivalent yield… I don’t know what it is…

Oh, sorry, I think I got it!

Oh dear…

I really hate BEY. It’s one of those small things that just really pisses me off.

m2, it is just another format you have to follow, hate that!

now that you have understood it, please explain it to me.