A variety of markup-level adjustments.
diff --git a/Doc/lib/libcodecs.tex b/Doc/lib/libcodecs.tex
index 564abbd..b87ed39 100644
--- a/Doc/lib/libcodecs.tex
+++ b/Doc/lib/libcodecs.tex
@@ -899,11 +899,11 @@
This module implements \rfc{3490} (Internationalized Domain Names in
Applications) and \rfc{3492} (Nameprep: A Stringprep Profile for
Internationalized Domain Names (IDN)). It builds upon the
-\code{punycode} encoding and \module{stringprep}.
+\code{punycode} encoding and \refmodule{stringprep}.
These RFCs together define a protocol to support non-\ASCII{} characters
in domain names. A domain name containing non-\ASCII{} characters (such
-as ``www.Alliancefran\c{c}aise.nu'') is converted into an
+as ``www.Alliancefran\c caise.nu'') is converted into an
\ASCII-compatible encoding (ACE, such as
``www.xn--alliancefranaise-npb.nu''). The ACE form of the domain name
is then used in all places where arbitrary characters are not allowed
@@ -915,13 +915,13 @@
Python supports this conversion in several ways: The \code{idna} codec
allows to convert between Unicode and the ACE. Furthermore, the
-\module{socket} module transparently converts Unicode host names to
+\refmodule{socket} module transparently converts Unicode host names to
ACE, so that applications need not be concerned about converting host
names themselves when they pass them to the socket module. On top of
that, modules that have host names as function parameters, such as
-\module{httplib} and \module{ftplib}, accept Unicode host names
-(\module{httplib} then also transparently sends an IDNA hostname in
-the \code{Host:} field if it sends that field at all).
+\refmodule{httplib} and \refmodule{ftplib}, accept Unicode host names
+(\refmodule{httplib} then also transparently sends an IDNA hostname in
+the \mailheader{Host} field if it sends that field at all).
When receiving host names from the wire (such as in reverse name
lookup), no automatic conversion to Unicode is performed: Applications