[Bug 4434] Relocate Example 6-1.

http://www.w3.org/Bugs/Public/show_bug.cgi?id=4434

           Summary: Relocate Example 6-1.
           Product: WSDL
           Version: 2.0
          Platform: All
               URL: http://lists.w3.org/Archives/Member/w3c-ws-
                    desc/2007Mar/0009
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Core
        AssignedTo: [email protected]
        ReportedBy: [email protected]
         QAContact: [email protected]


[[
6.1 Element based Extensibility

WSDL 2.0 allows extensions to be defined in terms of element information items. 
The WSDL 2.0 schema defines a base type for use by extension elements.  (see
Example 6-1 shows the type definition). The use of this type as a base type is,
however, optional. 

Extension elements are commonly used to specify some technology-specific
binding. They allow innovation in the area of network and message protocols
without having to revise the base WSDL 2.0 specification. WSDL 2.0 recommends
that specifications defining such protocols also define any necessary WSDL 2.0
extensions used to describe those protocols or formats. 

Example 6-1. Base type for extension elements
<xs:complexType name='ExtensionElement' abstract='true' >
  <xs:attribute ref='wsdl:required' use='optional' />
</xs:complexType>
]]

Move the example before the last paragraph.