For example:

The description in the card will wrap in accordance with the browser width.

To use the shortdesc element as the card description

Do not explicitly provide a card description, and the topic's shortdesc element will be used as the card description.

To add a card description in the prolog

Use the othermeta element within the topic prolog:

 <othermeta name="card-description" content="Card descriptions can be added in the prolog." />

Descriptions added the way will not appear in the card topic.

To add a hidden description within the topic body

Use the outputclass attribute of a <p> element, assigning the value card-description, but set the visibility to hide.

<p outputclass="card-description" visibility="hide">This card description is specified in the topic body but will not appear in the rendered topic.
</p>

To add a description that also appears in the rendered topic

Use the outputclass attribute of a <p> element, assigning the value card-description, but leave the default visibility show.

<p outputclass="card-description" visibility="show">This card description is specified in the topic body but will not appear in the rendered topic.
</p>

To add a description callout

Use the othermeta element within the topic prolog:

 <othermeta name="card-description-callout" content="Calling out callouts:" />

The callout is prepended to the card description in boldface, separated by a blank.