Allow title to be optional on equation

diff --git a/docbook/relaxng/docbook/src/math.rnc b/docbook/relaxng/docbook/src/math.rnc
index 76df8b4cc1249be1e2976b7054d0b4b6fa8060ec..cfc0d153bd28d7b293d1bfc8ec4f34ff08f7b55d 100644 (file)
--- a/docbook/relaxng/docbook/src/math.rnc
+++ b/docbook/relaxng/docbook/src/math.rnc
@@ -52,7 +52,7 @@ div {
     & db.floatstyle.attribute?
     & db.float.attribute?
 
-   db.equation.info = db._info.title.onlyreq
+   db.equation.info = db._info.title.only
 
    db.equation =
       element equation {