\begin{methoddesc}{list}{\optional{which}}
Request message list, result is in the form
-\code{(\var{response}, ['mesg_num octets', ...])}. If \var{which} is
-set, it is the message to list.
+\code{(\var{response}, ['mesg_num octets', ...], \var{octets})}.
+If \var{which} is set, it is the message to list.
\end{methoddesc}
\begin{methoddesc}{retr}{which}
"""Request listing, return result.
Result without a message number argument is in form
- ['response', ['mesg_num octets', ...]].
+ ['response', ['mesg_num octets', ...], octets].
Result when a message number argument is given is a
single response: the "scan listing" for that message.