diff --git a/doc/latex/cgi-script.tex b/doc/latex/cgi-script.tex
index d2b8d7e..14d0c56 100644
--- a/doc/latex/cgi-script.tex
+++ b/doc/latex/cgi-script.tex
@@ -1,4 +1,4 @@
-\section{CGI scripts}
+\section{CGI scripts}\label{sec:cgi-scripts}
 %
 \begin{description}
 \item[Used files:] cgi-script.scm
diff --git a/doc/latex/cgi-server.tex b/doc/latex/cgi-server.tex
index 410e812..459c8b4 100644
--- a/doc/latex/cgi-server.tex
+++ b/doc/latex/cgi-server.tex
@@ -1,4 +1,4 @@
-\section{CGI server}
+\section{CGI server}\label{sec:cgi-server}
 %
 \begin{description}
 \item[Used files:] cgi-server.scm
diff --git a/doc/latex/ftp.tex b/doc/latex/ftp.tex
index 2abd5af..9930c60 100644
--- a/doc/latex/ftp.tex
+++ b/doc/latex/ftp.tex
@@ -1,4 +1,4 @@
-\section{FTP client}
+\section{FTP client}\label{sec:ftp}
 \begin{description}
 \item[Used files:] ftp.scm
 \item[Name of the package:] ftp
diff --git a/doc/latex/ftpd.tex b/doc/latex/ftpd.tex
index bdd5c8c..ee9b7b7 100644
--- a/doc/latex/ftpd.tex
+++ b/doc/latex/ftpd.tex
@@ -1,4 +1,4 @@
-\section{FTP server}
+\section{FTP server}\label{sec:ftpd}
 
 \begin{description}
 \item[Used files:] ftpd.scm
diff --git a/doc/latex/httpd.tex b/doc/latex/httpd.tex
index 3fc8621..d0f7ece 100644
--- a/doc/latex/httpd.tex
+++ b/doc/latex/httpd.tex
@@ -1,4 +1,4 @@
-\section{HTTP server}
+\section{HTTP server}\label{sec:httpd}
 %
 \begin{description}
 \item[Used files:] ftpd.scm
diff --git a/doc/latex/intro.tex b/doc/latex/intro.tex
index ded8252..ab1ad8a 100644
--- a/doc/latex/intro.tex
+++ b/doc/latex/intro.tex
@@ -1,4 +1,4 @@
-\section{Overview}
+\section{Overview}\label{sec:intro}
 \subsection{What's in sunet?}
 
 The Scheme Underground Network Package contains a set of libraries for
diff --git a/doc/latex/netrc.tex b/doc/latex/netrc.tex
index 18eed0d..6fb78c0 100644
--- a/doc/latex/netrc.tex
+++ b/doc/latex/netrc.tex
@@ -1,4 +1,4 @@
-\section{Reading netrc-files}
+\section{Reading netrc-files}\label{sec:netrc}
 %
 \begin{description}
 \item[Used files:] netrc.scm
diff --git a/doc/latex/ntp.tex b/doc/latex/ntp.tex
index 9e92422..9ae3fa6 100644
--- a/doc/latex/ntp.tex
+++ b/doc/latex/ntp.tex
@@ -1,4 +1,4 @@
-\section{Using NTP}
+\section{Using NTP}\label{sec:ntp}
 %
 \begin{description}
 \item[Used files:] nettime.scm
diff --git a/doc/latex/pop3.tex b/doc/latex/pop3.tex
index 70541c9..9073173 100644
--- a/doc/latex/pop3.tex
+++ b/doc/latex/pop3.tex
@@ -1,4 +1,4 @@
-\section{Using POP3}
+\section{Using POP3}\label{sec:pop3}
 %
 \begin{description}
 \item[Used files:] pop3.scm
diff --git a/doc/latex/rfc822.tex b/doc/latex/rfc822.tex
index 1524693..3027e50 100644
--- a/doc/latex/rfc822.tex
+++ b/doc/latex/rfc822.tex
@@ -1,4 +1,4 @@
-\section{Handle RFC822 headers}
+\section{Handle RFC822 headers}\label{sec:rfc822}
 %
 \begin{description}
 \item[Used files:] rfc822.scm
diff --git a/doc/latex/smtp.tex b/doc/latex/smtp.tex
index be70e58..96d4307 100644
--- a/doc/latex/smtp.tex
+++ b/doc/latex/smtp.tex
@@ -1,4 +1,4 @@
-\section{Using SMTP}
+\section{Using SMTP}\label{sec:smtp}
 %
 \begin{description}
 \item[Used files:] smtp.scm
diff --git a/doc/latex/stringhax.tex b/doc/latex/stringhax.tex
index c9e4b64..bc8960c 100644
--- a/doc/latex/stringhax.tex
+++ b/doc/latex/stringhax.tex
@@ -1,4 +1,4 @@
-\section{Manipulating strings}
+\section{Manipulating strings}\label{sec:stringhax}
 
 
 \begin{description}
diff --git a/doc/latex/url.tex b/doc/latex/url.tex
index 5d66e9b..b181ddf 100644
--- a/doc/latex/url.tex
+++ b/doc/latex/url.tex
@@ -1,4 +1,4 @@
-\section{URL}
+\section{URL}\label{sec:url}
 %
 \begin{description}
 \item[Used files:] url.scm