Started into the Expression and Operand obejcts.

Operand.h

@@ -16,13 +16,13 @@ namespace jet {
       bool isString();
       bool isVariable();
 
-
       ///
       /// boolean is set by internal processes to return the boolean
       /// equivilent value.
       ///
       
       bool boolean;
+      coreutils::ZString string;
       
     private:
 //      dataType enum ={};