> For the complete documentation index, see [llms.txt](https://docs.toomuchmedia.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.toomuchmedia.com/nats-admin/skins-and-templates/further-reading/template-function-parameters/data_only.md).

# data\_only

The data\_only parameter to many [NATS ](/additional-resources/common-terms.md#nats)functions prevents NATS or CARMA from displaying a template. For example, the NATS template function \[\[nats\_list\_linkcodes usually displays [linkcodes ](/additional-resources/common-terms.md#linkcode)using a template and puts them in the {$linkcodes} array, but data\_only lets you change that behavior. For example, the following code will set the {$linkcodes} array without displaying anything to the viewer:

* {nats\_list\_linkcodes data\_only=1}