Create a cross-reference to another topic
You can insert a link to directly reference another element.
The <xref> element lets you make a cross-reference from one topic to another.
DITA Best Practices recommend using cross-references sparingly since they break the principle of creating "standalone topics". Cross-references, which are directly inserted into a topic, can cause issues when attempting to reuse the topic in another map. Consider using a relationship table to manage the links between the topics or organizing your table of contents to imply the relationship between the topics.
To create a cross-reference: