There's always someone making fancy with the HL thing.
There are plenty of things that are borderline HL related. Like, it's quite surprising to see the sizeable number of Microsoft Windows Systems files that start with HL. Or how my sister moved into a development who's acronym is HLOPEOA -- just an odd circumstance.
Now here's something interesting: HL Mencken And that's the way he's usually referred to, wrote a book called: The American Language. Despite his initials, and his comprehensive exploration of the American Language -- he completely ignored all things HL -- bummers! You can see his book at: The American Language.
In football there is a referee whose shirt says very clearly on the back "HL" -- he's the HL judge, which I do believe is a fairly important position. Especially given that it is protecting infringements on HLness.
It's never to late to bounce around! If you know more about this I would greatly appreciate hearing from you.