get the structure right on the introduction.

It needs cleaning up

introduction/introduction.tex

@@ -1,4 +1,22 @@
 
+%
+% Structure to introduction
+%
+%
+%  Application Area - safety critical controllers - define safety critical - describe 
+%                     approval processes - describe static testing
+%
+%                     Now start looking at the philosophy of making PEC's
+%                     safer. Describe what can and cannot be done.
+%
+%                     Point out errors in currently used techniques.
+%                     Bottom-up vs. top down discussion
+%                     
+%                     No current common notation for static testing that models both software and hardware
+%
+%                     How a new methodology should plug these gaps
+%
+%                      
 
 \section{Introduction}