rcsdiff -u a/testing.php
===================================================================
RCS file: a/RCS/testing.php,v
retrieving revision 1.3
diff -u -r1.3 a/testing.php
--- a/testing.php      2013/03/14 09:05:54    1.3
+++ a/testing.php      2013/03/14 09:09:18
@@ -1,5 +1,3 @@
 <?php
 echo "Hello World";
-echo "How are you doing today?";
-echo "thanks";
 ?>