\mainpage for doxygen

pub/src/frida2.cpp

@@ -2,9 +2,23 @@
 //* FRIDA: flexible rapid interactive data analysis                        *//
 //* frida2.cpp: main loop                                                  *//
 //* (C) Joachim Wuttke 1990-, C++ rewrite 2001-                            *//
-//* http://apps.jcns.fz-juelich.de                                         *//
+//* http://apps.jcns.fz-juelich.de/frida                                   *//
 //**************************************************************************//
 
+//! \mainpage FRIDA: flexible rapid interactive data analysis
+//! 
+//! Homepage: http://apps.jcns.fz-juelich.de/frida
+//!
+//! Useful entry points in this source documentation:
+//! - initializations, main loop: <a href="frida2_8cpp_source.html">frida2.cpp</a>
+//! - commands:                   <a href="commands_8cpp_source.html">commands.cpp</a>
+//! - online memory:              <a href="namespaceNOlm.html">namespace NOlm</a>
+//! - data model root:            <a href="classCOlo.html">class COlo</a>
+//! 
+//! Used libraries:
+//! - Minor utilities: <a href="../../jwu-varia/html/trivia/index.html">libtrivia</a>
+//! - Dialogue interface: <a href="../../jwu-varia/html/read-plus/index.html">libread-plus</a>
+
 #include <cstdlib>
 #include <iostream>
 #include <string>