The <ins> and <del> tags have always seemed weird to me in that they talk about the document's history, rather than the document itself, or what the document is talking about. The problem I've always seen with using them for version control is, what happens when the document you're trying to version control has <ins> and <del> tags?

I suppose you'd have the same problem if you put a diff under version control, but it seems like this kind of thing implies that there should be something different about those tags (I'd say another namespace, but those have been abused enough already).

I don't know how/if I'd solve this, I'm just wondering if anyone else feels the same.