Use the real name of the module: "smtplib", not "smtp".

Use logical (& consistent) markup.

Added a see-also section at the end.

Doc/lib/libsmtplib.tex

 % Documentation by ESR
-\section{Standard Module \module{smtp}}
-\stmodindex{smtp}
-\label{module-smtp}
+\section{Standard Module \module{smtplib}}
+\stmodindex{smtplib}
+\label{module-smtplib}
 
-The \code{smtp} module defines an SMTP session object that can be used
-to send mail to any Internet machine with an SMTP or ESMTP listener daemon.
-For details of SMTP and ESMTP operation, consult RFC 821 (Simple Mail
-Transfer Protocol) and RFC1869 (SMTP Service Extensions).
+The \module{smtplib} module defines an SMTP session object that can be
+used to send mail to any Internet machine with an SMTP or ESMTP
+listener daemon.  For details of SMTP and ESMTP operation, consult
+\rfc{821} (\emph{Simple Mail Transfer Protocol}) and \rfc{1869}
+(\emph{SMTP Service Extensions}).
 
 \begin{classdesc}{SMTP}{\optional{host, port}}
 A \class{SMTP} instance encapsulates an SMTP connection.  It has
 methods that support a full repertoire of SMTP and ESMTP
 operations. If the optional host and port parameters are given, the
-SMTP connect method is called with those parameters during
+SMTP \method{connect()} method is called with those parameters during
 initialization.
 
 For normal use, you should only require the initialization/connect,
-\var{sendmail}, and \var{quit} methods  An example is included below.
+\method{sendmail()}, and \method{quit()} methods  An example is
+included below.
 \end{classdesc}
 
 \subsection{SMTP Objects}
 \label{SMTP-objects}
 
-A \class{SMTP} instance has the following methods:
+An \class{SMTP} instance has the following methods:
 
 \begin{methoddesc}{set_debuglevel}{level}
-Set the debug output level.  A non-false value results in debug
-messages for connection and for all messages sent to and received from
-the server.
+Set the debug output level.  A true value for \var{level} results in
+debug messages for connection and for all messages sent to and
+received from the server.
 \end{methoddesc}
 
-\begin{methoddesc}{connect}{\optional{host='localhost',port=0}}
+\begin{methoddesc}{connect}{\optional{host='localhost'\optional{, port=0}}}
 Connect to a host on a given port.
 
-If the hostname ends with a colon (`:') followed by a number,
-that suffix will be stripped off and the number interpreted as
+If the hostname ends with a colon (\character{:}) followed by a
+number, that suffix will be stripped off and the number interpreted as 
 the port number to use.
 
-Note:  This method is automatically invoked by __init__,
-if a host is specified during instantiation.
+Note:  This method is automatically invoked by the constructor if a
+host is specified during instantiation.
 \end{methoddesc}
 
 \begin{methoddesc}{docmd}{cmd, \optional{, argstring}}
-Send a command to the server.  The optional argument
-string is simply concatenated to the command.
+Send a command \var{cmd} to the server.  The optional argument
+\var{argstring} is simply concatenated to the command, separated by a
+space.
 
-Get back a 2-tuple composed of a numeric response code and the actual
-response line (multiline responses are joined into one long line.)
+This returns a 2-tuple composed of a numeric response code and the
+actual response line (multiline responses are joined into one long
+line.)
 
 In normal operation it should not be necessary to call this method
 explicitly.  It is used to implement other methods and may be useful
@@ -58,29 +62,29 @@ Identify yourself to the SMTP server using HELO.  The hostname
 argument defaults to the FQDN of the local host.
 
 In normal operation it should not be necessary to call this method
-explicitly.  It will be implicitly called by the \var{sendmail} method
+explicitly.  It will be implicitly called by the \method{sendmail()}
 when necessary.
 \end{methoddesc}
 
 \begin{methoddesc}{ehlo}{\optional{hostname}}
 Identify yourself to an ESMTP server using HELO.  The hostname
 argument defaults to the FQDN of the local host.  Examine the 
-response for ESMTP option and store them for use by the
-\var{has_option} method.
+response for ESMTP option and store them for use by
+\method{has_option()}.
 
-Unless you wish to use the \var{has_option} method before sending
+Unless you wish to use \method{has_option()} before sending
 mail, it should not be necessary to call this method explicitly.  It
-will be implicitly called by the \var{sendmail} method when necessary.
+will be implicitly called by \method{sendmail()} when necessary.
 \end{methoddesc}
 
 \begin{methoddesc}{has_option}{name}
-Return 1 if name is in the set of ESMTP options returned by the
-server, 0 otherwise.  Case is ignored.
+Return \code{1} if \var{name} is in the set of ESMTP options returned
+by the server, \code{0} otherwise.  Case is ignored.
 \end{methoddesc}
 
 \begin{methoddesc}{verify}{address}
 Check the validity of an address on this server using SMTP VRFY.
-Returns a tuple consisting of code 250 and a full RFC822 address
+Returns a tuple consisting of code 250 and a full \rfc{822} address
 (including human name) if the user address is valid. Otherwise returns
 an SMTP error code of 400 or greater and an error string.
 
@@ -88,8 +92,8 @@ Note: many sites disable SMTP VRFY in order to foil spammers.
 \end{methoddesc}
 
 \begin{methoddesc}{sendmail}{from_addr, to_addrs, msg\optional{, options=[]}}
-Send mail.  The required arguments are an RFC822 from-address string,
-a list of RFC822 to-address strings, and a message string.  The caller
+Send mail.  The required arguments are an \rfc{822} from-address string,
+a list of \rfc{822} to-address strings, and a message string.  The caller
 may pass a list of ESMTP options to be used in MAIL FROM commands.
 
 If there has been no previous EHLO or HELO command this session, this
@@ -100,7 +104,8 @@ will be tried and ESMTP options suppressed.
 
 This method will return normally if the mail is accepted for at least 
 one recipient. Otherwise it will throw an exception (either
-SMTPSenderRefused, SMTPRecipientsRefused, or SMTPDataError)
+\exception{SMTPSenderRefused}, \exception{SMTPRecipientsRefused}, or
+\exception{SMTPDataError}).
 That is, if this method does not throw an exception, then someone 
 should get your mail.  If this method does not throw an exception,
 it returns a dictionary, with one entry for each recipient that was 
@@ -116,29 +121,41 @@ HELP, RSET, NOOP, MAIL, RCPT, and DATA are also supported.  Normally
 these do not need to be called directly, so they are not documented
 here. For details, consult the module code.
 
-Example:
+
+\subsection{SMTP Example}
+\label{SMTP-example}
+
+% really need a little description here...
 
 \begin{verbatim}
-    import sys, rfc822
+import sys, rfc822
 
-    def prompt(prompt):
+def prompt(prompt):
     sys.stdout.write(prompt + ": ")
     return string.strip(sys.stdin.readline())
 
-    fromaddr = prompt("From")
-    toaddrs  = string.splitfields(prompt("To"), ',')
-    print "Enter message, end with ^D:"
-    msg = ''
-    while 1:
+fromaddr = prompt("From")
+toaddrs  = string.splitfields(prompt("To"), ',')
+print "Enter message, end with ^D:"
+msg = ''
+while 1:
     line = sys.stdin.readline()
     if not line:
         break
     msg = msg + line
-    print "Message length is " + `len(msg)`
+print "Message length is " + `len(msg)`
 
-    server = SMTP('localhost')
-    server.set_debuglevel(1)
-    server.sendmail(fromaddr, toaddrs, msg)
-    server.quit()
+server = SMTP('localhost')
+server.set_debuglevel(1)
+server.sendmail(fromaddr, toaddrs, msg)
+server.quit()
 \end{verbatim}
 
+
+\begin{seealso}
+\seetext{\rfc{821}, \emph{Simple Mail Transfer Protocol}.  Available
+online at \url{http://info.internet.isi.edu/in-notes/rfc/files/rfc821.txt}.}
+
+\seetext{\rfc{1869}, \emph{SMTP Service Extensions}.  Available online 
+at \url{http://info.internet.isi.edu/in-notes/rfc/files/rfc1869.txt}.}
+\end{seealso}