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-        <h3>Welcome to Three-dimensional Particle Tracking software </h3>
-        <p><big>Three dimensional particle tracking velocimetry (3D-PTV) is one
-            of velocimetry methods, i.e a technique to measure velocity of
+        <h3>This is a very old branch of Three-dimensional Particle Tracking software </h3>
+        <p><big> Three-dimensional particle tracking velocimetry (3D-PTV) is one
+            of the velocimetry methods, i.e. a technique to measure the velocity of
             particles". 3D-PTV is the three-dimensional method, measuring
             velocity and velocity gradients along particle trajectories, i.e. in
             Lagrangian framework, in three dimensions and in time. This is among
-            few techniques that can measure objects motion in the fluid flow of
+            the few techniques that can measure objects' motion in the fluid flow of
             whatever complexity, three-dimensionality and unsteadiness. It is
-            possible to obtain full field of velocity, velocity derivatives
-            along with the Lagrangian acceleration and its spatial derivatives
+            possible to obtain the full field of velocity, velocity derivatives, and the Lagrangian acceleration and its spatial derivatives
             of higher moments. </big></p>
-        <h2> This software is not maintained anymore - follow the open source Particle Tracking Velocimetry software <a href="http://www.openptv.net"> OpenPTV </a> </h2>
+        <h2> This software is ARCHIVED - Use OpenPTV - Open-Source Particle Tracking Velocimetry <a href="http://www.openptv.net"> OpenPTV </a> </h2>
         <ul>
           <li><a href="wiki/an_introduction_to_3d_ptv/index.html">Background -
               what is 3D-PTV?</a>;</li>