# XML

XML has some slight differences (such as attributes) that should be documented.

See [XML file format](/v1/usage/supported-file-types.md#xml) for more information.

## **Query attributes**

Decoded attributes are set as properties on the related object with a prefix of `-`.

```shell
echo '<data>
    <users primary="true">
        <name>Tom</name>
    </users>
    <users primary="false">
        <name>Frank</name>
    </users>
</data>' | dasel -p xml '.data.users.[0].-primary'
true
```

## **Filtering on attributes**

We can also filter on attributes since they are defined against the related object.

```shell
echo '<data>
    <users primary="true">
        <name>Tom</name>
    </users>
    <users primary="false">
        <name>Frank</name>
    </users>
</data>' | dasel -p xml '.data.users.(-primary=true).name'
Tom
```


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://daseldocs.tomwright.me/v1/examples/xml.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.