6.7.4 Serialization as "multipart/form-data"

Looking at section 6.7.2 on multipart/form-data [1], the current text
says:
[[
In this serialization, for HTTP requests, the rules for constructing the
HTTP request IRI defined in 6.7.1 Serialization of the instance data in
parts of the HTTP request IRI apply if the {style} property of the
Interface Operation bound has a value of
"http://www.w3.org/@@@@/@@/wsdl/style/iri" as defined in 4.2 IRI Style.
[...]
This format serializes the instance data in the HTTP message body,
making it only suitable for HTTP requests using methods allowing message
bodies.
]]
http://dev.w3.org/cvsweb/~checkout~/2002/ws/desc/wsdl20/wsdl20-adjuncts.html?content-type=text/html;%20charset=utf-8#_http_operation_multipart_encoding

My understanding of this is that the parts of the instance data may go
into the URI and, in any case, the entire instance goes into the HTTP
message body.

Philippe