> For the complete documentation index, see [llms.txt](https://endash-guidance-docs.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://endash-guidance-docs.gitbook.io/docs/data/data-model-details/columns-data-model.md).
# Columns - Data model
* Click on the Columns tab to open the page.
{% hint style="info" %}
Use the Search bar to look for the item you want.
{% endhint %}
* Click on the item to enter the description.
* Click Save to confirm your action.
* Click Cancel or out side the pop up con close it.
