XML Schema Part 0: Primer Second Edition - Errata Corrige

Document at http://www.w3.org/TR/2004/REC-xmlschema-0-20041028/  
contains an error at section 2.7 Building Content Models.
In the first example box (Nested Choice and Sequence Groups), model  
group definition has a syntactic error for the missing "name" attribute.

Errata
<xsd:group id="shipAndBill">

Corrige
<xsd:group name="shipAndBill">


       Sergio de GIOIA
       Software Architect