added note on top for physics config

docs/graph.html

@@ -25,7 +25,13 @@
 <p>
   The graph visualization works smooth on any modern browser for up to a
   few thousand nodes and edges. To handle a larger amount of nodes, Graph
-  has clustering support.
+  has <a href="#Clustering">clustering</a> support.
+</p>
+
+<p>
+    Every dataset is different. Nodes can have different sizes based on content, interconnectivity can be high or low etc. Because of this, graph has a special option
+    that the user can use to explore which settings may be good for you. Use configurePhysics as described in the <u><a href="#PhysicsConfiguration">Physics</a></u> section or by
+    <u><a href="../examples/graph/25_physics_configuration.html">example 25</a></u>.
 </p>
 
 <p>