> For the complete documentation index, see [llms.txt](https://docs.b2ihealthcare.com/snowray/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.b2ihealthcare.com/snowray/v2.11/reference/resources/valuesets/authoring/dnd.md).

# Drag and Drop

Users who do not feel confident with [ECL](https://confluence.ihtsdotools.org/display/DOCECL) queries can just simply drag and drop [concepts](/snowray/v2.11/reference/resources/codesystems.md#concepts) from the terminology tree to the *Inclusions* or *Exclusions* sections:

![Drag and Drop Clauses](https://2644161733-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FnYnxbPtMuIDeL8O6cflh%2Fuploads%2FqVYE7Y9fVtjD3yxQ6TzJ%2Fvalue_set_drag_and_drop.gif?alt=media\&token=ca534f2a-a44b-461f-855a-a00de970db86)

{% hint style="info" %}
The default operator is `<< (Descendant or self of)`, but it can easily be changed using the dropdown.
{% endhint %}