# Miscellaneous XSD 1.1 Features

The `notNamespace` and `notQName` attributes are now supported on `xs:any` and `xs:anyAttribute` wildcards. The `definedSibling` option is not currently implemented.

The `targetNamespace` attribute is available for use on local element and attribute declarations appearing within the restriction of a complex type.

Saxon allows conditional inclusion of elements in a schema document, using attributes such as `vc:minVersion` and `vc:maxVersion`. This feature is available whether the schema processor is run in 1.0 or 1.1 mode, allowing new 1.1 features such as assertions to be ignored when running in 1.0 mode.

The type `xs:error` is implemented.

An element may now appear in more than one substitution group.

A new facet `xs:explicitTimezone` is available with values required, optional, or prohibited.

The new built-in data type `xs:dateTimeStamp` (an `xs:dateTime` with timezone required) is implemented.

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