A DITA content key reference, or conkeyref, is a mechanism for inserting a piece of content from one topic into another. It is a version of the DITA content reference mechanism that uses keys to locate the content to reuse rather than direct references to topics that contain reused content.
As with a conref, a conkeyref requires that the element to be reused has an id attribute. It also requires the topic that contains the reusable content to be assigned a key in a map. As with all uses of keys, you can substitute multiple maps or use profiling to create more than one definition of keys in a single map. This allows the same conkeyref to pull in content from various sources, depending on how your build is configured. This can make it easier to create and manage sophisticated content reuse scenarios.
To create a content key reference (conkeyref), follow these steps:
Reuse
Content on the main toolbar (or from the DITA menu or
Reuse submenu of the contextual menu). The Reuse
Content dialog box is displayed.
Choose Key
Reference button to select the key for the topic that contains the reusable
content (you can also select one from the drop-down list in the Key
field). The elements that you can reference from the source are presented in the table in
the middle of the Reuse Content dialog box.