r Expression</A>
<LI><A NAME="tex2html246"
  HREF="manual-node11.html#SECTION02094000000000000000">Base64 encoding</A>
<LI><A NAME="tex2html247"
  HREF="manual-node11.html#SECTION02095000000000000000">DES cryptography</A>
</UL>
<LI><A NAME="tex2html248"
  HREF="manual-node12.html">Date and Time</A>
<LI><A NAME="tex2html249"
  HREF="manual-node13.html">Streams and Input/Output</A>
<UL>
<LI><A NAME="tex2html250"
  HREF="manual-node13.html#SECTION020111000000000000000">Streams</A>
<LI><A NAME="tex2html251"
  H