Why did the “?fl=hl” parameter serve in the Habrahabr feed?

Question

Habr

At least a year ago (and it could easily be even earlier) I developed the habit of adding “?fl=hl” to the address of the then tape of new Habrahabr blog posts.

I definitely remember that at that time it brought some benefit in terms of either filling or displaying the tape.

Unfortunately, I completely forgot what kind of benefit.

In those days, this parameter was not a hidden secret, so I ask the knowledgeable old-timers of Habrahabr to tell me what this parameter served for, whether it still retained its previous value or not, so is it possible to forget about it forever or does it make sense to continue using his.

Answer 1

hl - this was, in fact, the user's tape. it was possible to write ?fl=all, then everything was displayed.