Unfortunately I have to understand old days code written in RPG2. That code also use Extension specifications which I never used before (as I am programming in ILE). I have searched on net it only refers me to a book written in 79 which contains dull E-specs maps which I don't understand. The only thing which I could understand is that E-specs were used to define arrays and tables. Can you please tell me in easy words what E specs are and why they were used (if there is a little coding example that will be more helpful) or refer me some good site where I could find simple examples of E specs.