default namespace = ""
namespace xsi = "http://www.w3.org/2001/XMLSchema-instance"

element param-spids-info {
	attribute xsi:noNamespaceSchemaLocation { "http://chart/schemas/param-spids-info.xsd" }? &
	element field { 
    ## param name 
    element name { text } &
    ## list of special packet identifiers associated with param
    element spid { xsd:integer }
  }+ 
}