However, it's best to reserve the use of the xref macro for creating interdocument cross references.
When using the xref macro, if the target contains a dot (`.`), it will be treated as a reference to another document, not an ID within the same document.
If the intention is to link to an ID within the same document, the target must be proceeded by a hash (`#`).
=== Natural cross reference
You can also create a reference to a block or section using its title rather than its ID.