Added refpurpose for biblioref

diff --git a/docbook/relaxng/docbook/src/bibliography.rnc b/docbook/relaxng/docbook/src/bibliography.rnc
index 2e4206679b1bb5fda01dfa468084a6e03ea09cb1..dd0d42cff46921514266d5ba4b9d5113e74f9994 100644 (file)
--- a/docbook/relaxng/docbook/src/bibliography.rnc
+++ b/docbook/relaxng/docbook/src/bibliography.rnc
@@ -234,7 +234,7 @@ div {
 
 [
    db:refname [ "biblioref" ]
-   db:refpurpose [ "" ]
+   db:refpurpose [ "A cross-reference to a bibliographic entry" ]
 ]
 div {