XQuery 1.0 - 2.3.2 What is "content" of an element node?

This passage talks about nodes whose content is defined by an expression. 
The meaning here is that the given expression was used in the element 
constructor that created the node.
--Don Chamberlin

----- original message ----------
Date: Wed, 23 Oct 2002 16:46:02 -0400 (EDT)
From: Svgdeveloper@aol.com
Message-ID: <80.236c5fe8.2ae86458@aol.com>
To: public-qt-comments@w3.org
Subject: XQuery 1.0 - 2.3.2 What is "content" of an  element node?

In the first example in numbered point 3. in 2.3.2 reference is made to 
the 
"content" of an element node.

I guess this question relates to my comment on the XSLT 2.0 spec. but I am 

unclear what the "content" of an element node is. ... I think I am clear 
about what the content of an element in a serialized XML document is, but 
I 
don't understand the term content as applied to an element node.

I notice that the term content is not defined in any of the glossaries in 
the 
various specifications.

So, what is the "content" of an element node? How does it differ, if at 
all, 
from the nodes which might result from parsing the content of the XML 
document which has, perhaps, been parsed to construct the element node? 
How 
is such "content" serialized if it isn't synonymous with the child / 
descendant nodes of the element node?

Andrew Watt