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?