==validate:xsd==
{|
|-
| valign='top' width='90' | '''Signatures'''
|<code><b>validate:xsd</b>($input as item()) as empty-sequence()</code><br /><code><b>validate:xsd</b>($input as item(), $schema as xs:string) as empty-sequence()</code>
|-
|}
==validate:dtd==
{|
|-
| valign='top' width='90' | '''Signatures'''
|<code><b>validate:dtd</b>($input as item()) as empty-sequence()</code><br /><code><b>validate:dtd</b>($input as item(), $dtd as xs:string) as empty-sequence()</code>
|-
|}
==Examples==