<sect2><title> </title><para> </para></sect2> <sect2><title>Descriptions</title> <para>Last checked against version &sed-contversion;.</para> <sect3><title>Program file descriptions</title> <sect4><title>sed</title> <para>sed is a stream editor. A stream editor is used to perform basic text transformations on an input stream (a file or input from a pipeline).</para></sect4> </sect3> </sect2>