# Schema processing changes

A restriction has been lifted: `fixed` and `default` values are now supported for elements with a complex type (specifically, a complex type with mixed content).

A `SchemaURIResolver` may now be specified for resolving the location hints found in `xsd:import`, `xsd:include`, and `xsd:redefines`; in the `xsi:schemaLocation` and `xsi:noNamespaceSchemaLocation` attributes in instance documents; in the `xsl:import-schema` declaration in XSLT; and in the `import schema` declaration in XQuery. This differs from a normal `URIResolver` in that the decision may be made based both on the target namespace of the schema being loaded, and on the location hints.

It is no longer an error for schema documents to include each other recursively. This condition now results in a warning message rather than an error message.

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