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# CFXMLDocumentTypeInfo

Contains the external ID of the DTD.

```
struct CFXMLDocumentTypeInfo
```

## Overview

A pointer to this structure is included in the CFXMLNode object passed to your application when the parser encounters the beginning of the DTD. Use the [`CFXMLNodeGetInfoPtr`](/documentation/CoreFoundation/CFXMLNodeGetInfoPtr) function to obtain a pointer to this structure.

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