# saxon:allow-all-built-in-types

This attribute may be set on the `xsl:stylesheet` element. The permitted values are "yes" and "no". If set to "yes", the attribute enables the use of built-in types such as `xs:int` and `xs:NCName` that are not permitted under the W3C conformance rules for a Basic XSLT Processor. This attribute has no effect under Saxon-SA, which already permits these types, under the conformance rules for a Schema-Aware XSLT Processor.

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