>#CE5A6A>Example 1 Block Structure

 	PROGRAM Main
           GLOBAL  a, b  
 	  PROCEDURE P (PARAMETER x)
           {Begin P}
             LOCAL a
             ...a...  
             ...b...
 	    ...x...
           {End P} 
         {Begin Main}  
           ...
           Call P(a)
           ... 
         {End Main}