Don't want to get caught in a bikeshed over this, but I'm not an mdoc expert; it seems odd to me.

Interesting -- when I added these I didn't anticipate that anyone would use them directly, but rather that consistency be checked via LIST_INSERT_HEAD etc.

I'll try to sum up IRC consensus:

1. It's slightly wrong; it should just be .Nm queue
2. (queue(3) to distinguish the pagename from the generic word 'queue')
3. But we also shouldn't have a million other .Nms — the em dash logically separates the page name from the macros therein
4. (But maybe we should, because they're all MLINKed to queue.3 itself.)
5. But also mdoc(7) is badly adapted to section 3 and 9, and maybe its provisions about argument-less .Nm use are wrong anyway.
6. Strong vote of confidence from Baptiste "your approach is probably the less worse :)"

Yeah, and they probably shouldn't be. Maybe this part should be moved to queue.h instead.

Yeah, I think we should keep these private.

Can remove.