When you specify a chunking attribute value, it overrides the default chunking behavior, which is to show each topic on its own page. For example, if you have a parent topic with several children, you can use the chunking attribute to specify if the topics appear on a single page or separate pages when publishing to Heretto Portal or HTML.

Here's an example map with some hierarchy:

When you publish this map with no chunking attribute applied, the parent topic shows on the page with links to each of the child topics. This HTML example highlights this behavior.

When you publish this map with the to-content value for the chunking attribute, the parent topic and each of its children show on the same page. This PDF example highlights this behavior.

You can apply the chunk attribute to a single topic or to a map. When you apply a chunk attribute to a topic, the chunking behavior applies only to the topic and any children of that topic. When you apply a chunk attribute to a map, the chunking behavior is established for the entire map.