Improved description

1 files changed, 2 insertions, 0 deletions

diff --git a/README.rst b/README.rst
index 2f9bdac..83b6236 100644
--- a/README.rst
+++ b/README.rst
@@ -43,6 +43,8 @@ object, you can create your own subclass that does that::
     from markupsafe import Markup, escape_silent as escape
 
     class SilentMarkup(Markup):
+        __slots__ = ()
+
         @classmethod
         def escape(cls, s):
             return cls(escape(s))