thanks this helps to explain things better.
I'm guessing markdown doesn't support this but perhaps HTML can.
However I wouldn't be able to answer this as well as @asgarth, @roadscape and a few others i'm guessing
.....
I haven't really seen this being used on any sites i've been visiting these days ... even really long news articles don't seem to use it.
Also what's the character limit for a steem post? I know they can be really long but is the limit long enough to have wikipedia length articles for example?
Maybe you've seen them referred as quick links. If they are not used as often it's a pity for many reasons, one of them being UX, another being SEO.
That's a good question.
You don't have to think necessarily really long. Think for example a post explains STEEM, SBD, Savings account, STEEM Power and Delegation, and the reader is only interested in one of them. Quick links help. Or if a post describes multiple features of an interface, and you already know most of them, but are curious about one or two you haven't used yet.