In general, cross-references link to non-essential information that adds to the reader's understanding.
References to other documents
Cross-references within generated reference documents
When linking from one reference topic to another in generated reference documents, use the reference generator's standard linking syntax rather than hard-coding links within the reference, so that the links will change appropriately when the reference docs change.
When a cross-reference is a link, don't put the link text in quotation marks.
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In the rare case when a cross-reference isn't a link, use quotation marks.
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For cross-references that are titles of published works such as books or movies, use italics and title caps but no quotation marks.