How to write "anything goes" in Relax NG? - relaxng

Question

Is there a way to write that there are completely no restrictions on content of an element in Relax NG?
In XML Schema something like this is apparently possible with
<xs:sequence>
<xs:any namespace="##targetNamespace" processContents="lax"
minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
Can I do an equivalent of this in Relax NG?

Answer 1

I propose this solution, dividing attributes and elements declaration, and using mixed element to allow mixed content.
<?xml version="1.0" encoding="UTF-8"?>
<grammar xmlns="http://relaxng.org/ns/structure/1.0">
<start>
<ref name="anyElement"/>
</start>
<define name="anyElement">
<element>
<anyName/>
<ref name="anyAttributes"/>
<mixed>
<zeroOrMore>
<ref name="anyElement"/>
</zeroOrMore>
</mixed>
</element>
</define>
<define name="anyAttributes">
<zeroOrMore>
<attribute>
<anyName/>
</attribute>
</zeroOrMore>
</define>
</grammar>

Answer 2

Okay, I don't know if this the best way, but I have adapted this from "any" definition in Relax NG spec.
<?xml version="1.0" encoding="UTF-8"?>
<grammar xmlns="http://relaxng.org/ns/structure/1.0"
xmlns:a="http://relaxng.org/ns/compatibility/annotations/1.0"
datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes">
<start>
<ref name="Anything"/>
</start>
<define name="Anything">
<zeroOrMore>
<choice>
<element>
<anyName/>
<ref name="Anything"/>
</element>
<attribute>
<anyName/>
</attribute>
<text/>
</choice>
</zeroOrMore>
</define>
</grammar>