How can I use a token to display the node body summary? I'm trying to use a token to show the body summary of a node on Drupal 7.

The Replacement Patterns area gives the following information:


Body
[node:body:?]
The main body text of the node. The following properties may be appended to the token: value (Text), summary (Summary), format (Text format)


However, I don't understand what "append" means in this context.  I tried [node:body:summary] and [node:body:?summary], but neither works.  What am I supposed to do to get the summary?
Correct tokens are [node:body] and [node:summary].
Yoy should probably check http://drupal.org/node/1295524 if you experience problems with summary tag