The \var{epilogue} attribute acts the same way as the \var{preamble}
attribute, except that it contains text that appears between the last
boundary and the end of the message.
+
+One note: when generating the flat text for a \mimetype{multipart}
+message that has no \var{epilogue} (using the standard
+\class{Generator} class), no newline is added after the closing
+boundary line. If the message object has an \var{epilogue} and its
+value does not start with a newline, a newline is printed after the
+closing boundary. This seems a little clumsy, but it makes the most
+practical sense. The upshot is that if you want to ensure that a
+newline get printed after your closing \mimetype{multipart} boundary,
+set the \var{epilogue} to the empty string.
\end{datadesc}