*
CharsetRange ContentCoding LanguageTag If-None-Match
*/*
MediaRange
+
UrlForm
+*?
QueryOps
++
AttributeMap Headers
++?
UrlForm
+:
Query
+?
QueryOps UrlForm
+??
QueryOps
--
AttributeMap
-?
QueryOps
/
Uri
:+
Query
<<
Writer
<<#
Writer
=?
QueryOps
?
QueryOps
QValue