World Wide Web current failings:

• No recognized way of referencing passages of documents
• Fragment identifiers cannot be used to efficiently reference down to the word or character level.
• Linked documents have a tendency to disappear, thus rendering references less useful
• No recognized way of referring to a particular version of a document, whose integrity is guaranteed

Solution:

• Introduce sub-fragment references syntax for href
• List of character/character range references
• This depends on a knowing the document's character set
• List of word/word range references
• This depends on a tokenization algorithm
• Introduce document content hash syntax for href ... ...
• Extend HTTP to allow request of specific document versions ? This is actually probably handled fine at the application layer
• Define standard for embedding referenced documents into an HTML document e.g. ... ... ...

is like an The <code>hash</code> attribute has no effect? Just there to help developers? But it violates DRY because it can be computed.</p>