Not yet implemented Features used in concurrency control
 
         (however they may be implemented if really needed, at the cost of development time)
			
            -  Generic package 
 
            -  Block declare 
 
            -  Statements : exit, delay 
 
            -  Declarations : character, access types
 
            -  Expressions : Succ, Pred, First, Last, Length attributes 
 
            -  Object, tagged types, classes inheritance 
 
         
         
         last update : 20/10/2005