# -*- rnc -*-
# RELAX NG Compact Syntax Grammar for the
# Atomsphere sort structuredExtension version 1.0
#
# Although it is not required by the generator,
# the entries in the document should be listed in the order of the sort element.
# 
# here is an example of what the sort extension looks like in a document:
# <feed xmlns="http://www.w3.org/2005/Atom" xml:lang="en-US" xmlns:sort="http://www.colorfulsoftware.com/projects/atomsphere/extension/sort/1.0">
# ...
# 	<sort:asc type="title" />
# <entry>
#	...
# </entry>
#	...
# </feed>

namespace sort = "http://www.colorfulsoftware.com/projects/atomsphere/extension/sort/1.0"

start = asc | desc 

# Ascending order
asc =
   element sort:asc {
      attribute type { "updated" | "title" }
   }
   
# Descending order
desc =
   element sort:desc {
      attribute type { "updated" | "title" }
   }