Consistency: "Unix" ==> "\UNIX{}"
diff --git a/Doc/lib/libsocksvr.tex b/Doc/lib/libsocksvr.tex
index 0cee090..98ffec6 100644
--- a/Doc/lib/libsocksvr.tex
+++ b/Doc/lib/libsocksvr.tex
@@ -11,8 +11,8 @@
are discrete packets of information that may arrive out of order or be
lost while in transit. The more infrequently used
\code{UnixStreamServer} and \code{UnixDatagramServer} classes are
-similar, but use Unix domain sockets; they're not available on
-non-Unix platforms. For more details on network programming, consult
+similar, but use \UNIX{} domain sockets; they're not available on
+non-\UNIX{} platforms. For more details on network programming, consult
a book such as W. Richard Steven's \emph{UNIX Network Programming}
or Ralph Davis's \emph{Win32 Network Programming}.
diff --git a/Doc/lib/libstdwin.tex b/Doc/lib/libstdwin.tex
index 514252f..91dc1af 100644
--- a/Doc/lib/libstdwin.tex
+++ b/Doc/lib/libstdwin.tex
@@ -20,7 +20,7 @@
This module defines several new object types and functions that
provide access to the functionality of STDWIN.
-On Unix running X11, it can only be used if the \code{DISPLAY}
+On \UNIX{} running X11, it can only be used if the \code{DISPLAY}
environment variable is set or an explicit \samp{-display
\var{displayname}} argument is passed to the Python interpreter.
diff --git a/Doc/lib/libwww.tex b/Doc/lib/libwww.tex
index f341ea7..8cfc09d 100644
--- a/Doc/lib/libwww.tex
+++ b/Doc/lib/libwww.tex
@@ -8,8 +8,8 @@
World-Wide Web (WWW) clients and/or services, and a few modules
related to news and email. They are all implemented in Python. Some
of these modules require the presence of the system-dependent module
-\code{sockets}, which is currently only fully supported on Unix and
-Windows NT. Here is an overview:
+\code{sockets}\refbimodindex{socket}, which is currently only fully
+supported on \UNIX{} and Windows NT. Here is an overview:
\begin{description}
diff --git a/Doc/libsocksvr.tex b/Doc/libsocksvr.tex
index 0cee090..98ffec6 100644
--- a/Doc/libsocksvr.tex
+++ b/Doc/libsocksvr.tex
@@ -11,8 +11,8 @@
are discrete packets of information that may arrive out of order or be
lost while in transit. The more infrequently used
\code{UnixStreamServer} and \code{UnixDatagramServer} classes are
-similar, but use Unix domain sockets; they're not available on
-non-Unix platforms. For more details on network programming, consult
+similar, but use \UNIX{} domain sockets; they're not available on
+non-\UNIX{} platforms. For more details on network programming, consult
a book such as W. Richard Steven's \emph{UNIX Network Programming}
or Ralph Davis's \emph{Win32 Network Programming}.
diff --git a/Doc/libstdwin.tex b/Doc/libstdwin.tex
index 514252f..91dc1af 100644
--- a/Doc/libstdwin.tex
+++ b/Doc/libstdwin.tex
@@ -20,7 +20,7 @@
This module defines several new object types and functions that
provide access to the functionality of STDWIN.
-On Unix running X11, it can only be used if the \code{DISPLAY}
+On \UNIX{} running X11, it can only be used if the \code{DISPLAY}
environment variable is set or an explicit \samp{-display
\var{displayname}} argument is passed to the Python interpreter.
diff --git a/Doc/libwww.tex b/Doc/libwww.tex
index f341ea7..8cfc09d 100644
--- a/Doc/libwww.tex
+++ b/Doc/libwww.tex
@@ -8,8 +8,8 @@
World-Wide Web (WWW) clients and/or services, and a few modules
related to news and email. They are all implemented in Python. Some
of these modules require the presence of the system-dependent module
-\code{sockets}, which is currently only fully supported on Unix and
-Windows NT. Here is an overview:
+\code{sockets}\refbimodindex{socket}, which is currently only fully
+supported on \UNIX{} and Windows NT. Here is an overview:
\begin{description}