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-rw-r--r--doc/src/sgml/cube.sgml2
1 files changed, 1 insertions, 1 deletions
diff --git a/doc/src/sgml/cube.sgml b/doc/src/sgml/cube.sgml
index 60bd84bf22b..0a226ca5428 100644
--- a/doc/src/sgml/cube.sgml
+++ b/doc/src/sgml/cube.sgml
@@ -4,7 +4,7 @@
<title>cube</title>
<indexterm zone="cube">
- <primary>cube</primary>
+ <primary>cube (extension)</primary>
</indexterm>
<para>