To create a conref in your DITA topics, you first need to create a DITA topic (direct referencing) or a DITA map (indirect referencing) that contains the content (elements) that you plan to reuse. For example, say you plan to reuse a table, an ordered list, and an image across multiple topics. You will need to add these elements to the source topic. If you are using indirect referencing, the topic is then added to the DITA map. Also, to make an element reusable, you need to assign a unique identifier to the element. For details, on how to make DITA content reusable, see .