1 files changed, 5 insertions, 0 deletions
diff --git a/index.rst b/index.rst
index 3869a50..9dbecf1 100644
--- a/index.rst
+++ b/index.rst
@@ -767,6 +767,11 @@ Encoders and decoders
 
    Subclass of :class:`JSONEncoder` that escapes &, <, and > for embedding in HTML.
 
+   It also escapes the line separator and paragraph separator
+   characters U+2028 and U+2029, irrespective of the ensure_ascii setting,
+   as these characters are not valid in Javascript strings (see
+   http://timelessrepo.com/json-isnt-a-javascript-subset).
+
    .. versionchanged:: 2.1.0
       New in 2.1.0