bpo-35054: Add more index entries for symbols. (GH-10064)
diff --git a/Doc/library/constants.rst b/Doc/library/constants.rst
index a698ff8..5017159 100644
--- a/Doc/library/constants.rst
+++ b/Doc/library/constants.rst
@@ -51,9 +51,10 @@
See :exc:`NotImplementedError` for details on when to use it.
+.. index:: single: ...; ellipsis literal
.. data:: Ellipsis
- The same as the ellipsis literal "...". Special value used mostly in conjunction
+ The same as the ellipsis literal "``...``". Special value used mostly in conjunction
with extended slicing syntax for user-defined container data types.