Index: code/modules/grizzly/src/main/java/com/sun/grizzly/DefaultSelectionKeyHandler.java
===================================================================
--- code/modules/grizzly/src/main/java/com/sun/grizzly/DefaultSelectionKeyHandler.java	(revision 3774)
+++ code/modules/grizzly/src/main/java/com/sun/grizzly/DefaultSelectionKeyHandler.java	(working copy)
@@ -222,7 +222,16 @@
         return timeout;
     }
     
-    
+    /**
+     * Set expiration timeout for the {@link SelectionKey}.
+     *
+     * If during that defined timeout the client isn't pushing bytes
+     * (or closing the connection), the SelectionKey will be expired
+     * and its channel closed. The negative timeout value will let
+     * {@link SelectionKey} never expire.
+     *
+     * @param timout in seconds
+     */ 
     public void setTimeout(long timeout) {
         this.timeout = timeout;
     }