<keydef>
The <keydef>
element is a convenience element that is used to define
keys without any of the other effects that occur when using a <topicref>
element: no content is included in output, no title is included in the table of contents,
and no linking or other relationships are defined. The <keydef>
element
is not the only way to define keys; its purpose is to simplify the process by defaulting
several attributes to achieve the described behaviors.
Category: Map group elements