Not that it helps you much now, but the best documentation for tagged types (including the `rep` operation) is probably this: http://arclanguage.github.io/ref/type.html
You can get to it from the "Type operations" link in the table of contents. Of course, you might've been drawn to the "Templates" page instead.
And unfortunately, that documentation describes Anarki's stable branch. Making documentation of similar quality for Anarki's master branch might be quite a bit more work. So even if you were familiar with tagged types already, the knowledge that template instances were a tagged type on Anarki master might be hard to discover.
I suppose a more ideal form of the documentation would describe on the "Templates" page that template instances were a tagged type with a certain representation. It could describe the direct implications of that, but it would also have a link to the "Type operations" page for more background.
>I suppose a more ideal form of the documentation would describe on the "Templates" page that template instances were a tagged type with a certain representation. It could describe the direct implications of that, but it would also have a link to the "Type operations" page for more background.
That would have been tremendously helpful, can we do that? Who actually maintains the documentation, can it be updated?
Perhaps we should maintain the docs only in plain-text and only within the repo, just because of the operational overheads of managing multiple branches. At least that way they won't seem to lie to a newcomer. I'm curious to hear what others think.