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-rw-r--r--grc/python/block.dtd4
1 files changed, 2 insertions, 2 deletions
diff --git a/grc/python/block.dtd b/grc/python/block.dtd
index 7c6c39811..8681d1255 100644
--- a/grc/python/block.dtd
+++ b/grc/python/block.dtd
@@ -31,8 +31,8 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
-->
<!ELEMENT param (name, key, value?, type, hide?, option*)>
<!ELEMENT option (name, key, opt*)>
-<!ELEMENT sink (name, type, vlen?, nports?, optional?)>
-<!ELEMENT source (name, type, vlen?, nports?, optional?)>
+<!ELEMENT sink (name, key?, type, vlen?, nports?, optional?)>
+<!ELEMENT source (name, key?, type, vlen?, nports?, optional?)>
<!--
Bottom level elements.
Character data only.