I admit this feature request is probably somewhat limited in useful scope, but I'm throwing it out there anyway. Inspired by this answer, and because I want to use it on this one, I'm requesting that name be supported on a tags in posts.
On very long answers, such as the closing/migration guidance answer, this would allow direct linking to the specific closure reason. This would then allow us, when someone asks why a question was closed, to link directly to the appropriate reason and description thereof.
I recognize the limited scope of this, however, I have seen other long answers that could stand to have that kind of "deep" linking ability as well.
(The original incarnation of this post had either name or id, but preferenced name. Per Koper's answer, which I agree with, I took out the idea of supporting id, because Koper's right -- too dangerous.)
namedefined? Would this be prone to generating text/code inconveniently messy?#) and it's alpha-num +-only, then make it an Anchor tag. This fits right in with the current URL syntax, and even allows you to define them on non-heading elements as well.### Some Headingthen it's the renderer's job to come up with an ID, not the user's. I think it's more about changing how the existing syntax gets rendered, than changing the syntax itself - like the currently top-voted answer suggests. The preview box wouldn't need to implement it (navigating previewed links would navigate away from the post being written anyway)