bpo-33847: Add '@' operator entry to index (GH-7669)
diff --git a/Doc/reference/expressions.rst b/Doc/reference/expressions.rst
index 61bc912..17f1f2c 100644
--- a/Doc/reference/expressions.rst
+++ b/Doc/reference/expressions.rst
@@ -1139,7 +1139,9 @@
common type and then multiplied together. In the latter case, sequence
repetition is performed; a negative repetition factor yields an empty sequence.
-.. index:: single: matrix multiplication
+.. index::
+ single: matrix multiplication
+ operator: @
The ``@`` (at) operator is intended to be used for matrix multiplication. No
builtin Python types implement this operator.