Add description. Add list of recently added symbols.

diff --git a/doc/reference/libtasn1-docs.sgml b/doc/reference/libtasn1-docs.sgml
index c926e24..7d63ecd 100644 (file)
--- a/doc/reference/libtasn1-docs.sgml
+++ b/doc/reference/libtasn1-docs.sgml
@@ -6,8 +6,27 @@
     <title>Libtasn1 API Reference Manual</title>
   </bookinfo>
 
+    <para>
+      This document describes the Libtasn1 library developed for ASN.1
+      (Abstract Syntax Notation One) structures management and DER
+      (Distinguished Encoding Rules) encoding functions.
+    </para>
+
+    <para>
+      More up to date information can be found at
+      <ulink url="http://josefsson.org/libtasn1/">
+       http://josefsson.org/libtasn1/</ulink>.
+    </para>
+
   <chapter>
     <title>Libtasn1 API Reference Manual</title>
     <xi:include href="xml/libtasn1.xml"/>
   </chapter>
+
+  <index>
+    <title>Index</title>
+  </index>
+  <index role="2.0">
+    <title>Index of new symbols in 2.0</title>
+  </index>
 </book>