This code should iterate through ALL Page Scope Attributes and print out both 
the name (attribute id) and the value associated with it. 

<page:attributes id="loop">
   Name: <jsp:getProperty name="loop" property="name"/>
   Value: <jsp:getProperty name="loop" property="value"/>
</page:attributes>

The AttributesTag Tag class is stored as the "loop" object in the Session.
    public final int doStartTag() throws JspException {
        ...

	pageContext.setAttribute(id,this);
    }


But the AttributesTag class does not have the getValue() method to retrieve the 
value from.