Cross-referencing
Cross-referencing is done terribly.
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All the academic cross-referencing formats are pretty awful. None of them are particularly powerful and there's so many opinions about the correct way to do it, they become worthless.
没有子分类。
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我在想-HTML中的“ A”标记用于引用-但大多数情况下，除了链接标题外，我们不包含适当的语义关系（但如果可以的话，我们可以使用的语义链接）。例如，Wikidata P是此类链接类型的列表（它们称为属性）...
但是，URL本身就是用于引用的，所以为什么URL不应该包含语义链接数据。
然后，如果要引用纯文本（而不是超文本）的内容，则URL通常很长。
这些无疑是交叉引用中的挑战。
I'm thinking -- the "A" tag in HTML was meant for referencing -- but most of the time, we do not include a proper semantic relationship, other than link title (but we could, if we had a list of commonly used semantic links). For example, Wikidata P is a list of such link types (they call them properties)...
But then, URL itself as such was meant for referencing, so why shouldn't a URL include semantic link data.
And then, usually URLs are long, if you want to reference things in plain text (rather than hypertext).
These are certainly challenges in cross-referencing.