Clarify comment.
diff --git a/Lib/lib-old/util.py b/Lib/lib-old/util.py
index bb0a870..6cb1433 100644
--- a/Lib/lib-old/util.py
+++ b/Lib/lib-old/util.py
@@ -2,7 +2,7 @@
# NB: These are now built-in functions, but this module is provided
# for compatibility. Don't use in new programs unless you need backward
-# compatibility (with old interpreters).
+# compatibility (i.e. need to run with old interpreters).
# Remove an item from a list.
diff --git a/Lib/util.py b/Lib/util.py
index bb0a870..6cb1433 100644
--- a/Lib/util.py
+++ b/Lib/util.py
@@ -2,7 +2,7 @@
# NB: These are now built-in functions, but this module is provided
# for compatibility. Don't use in new programs unless you need backward
-# compatibility (with old interpreters).
+# compatibility (i.e. need to run with old interpreters).
# Remove an item from a list.