Comment

diff --git a/zebra/pqf.properties b/zebra/pqf.properties
index 218041d..225b4fa 100644 (file)
--- a/zebra/pqf.properties
+++ b/zebra/pqf.properties
@@ -3,6 +3,9 @@
 # Properties file to drive the YAZ CQL-to-PQF converter for Zebra.
 # This specifies the interpretation of various CQL indexes, relations,
 # etc. in terms of Type-1 query attributes.
+#
+# For documentation of required structure attributes (4=X) see:
+# http://www.indexdata.com/zebra/doc/querymodel-zebra.html#querymodel-pqf-apt-mapping-structuretype
 
 # Identifiers for prefixes used in this file. (index.*)
 set.cql                = info:srw/cql-context-set/1/cql-v1.1