#16333: document a way to get rid of trailing whitespace when indent is used.
diff --git a/Lib/json/encoder.py b/Lib/json/encoder.py
index 169450d..4d1aaa8 100644
--- a/Lib/json/encoder.py
+++ b/Lib/json/encoder.py
@@ -131,7 +131,10 @@
If indent is a non-negative integer, then JSON array
elements and object members will be pretty-printed with that
indent level. An indent level of 0 will only insert newlines.
- None is the most compact representation.
+ None is the most compact representation. Since the default
+ item separator is ', ', the output might include trailing
+ whitespace when indent is specified. You can use
+ separators=(',', ': ') to avoid this.
If specified, separators should be a (item_separator, key_separator)
tuple. The default is (', ', ': '). To get the most compact JSON