Hi, Question. Is anyone aware of a problem with F77 on 3B2/400 running System V.3 ? When trying to validate a simple program it works as expected on Linux. See below. But, on Unix V.3 it does not. You do not get the question until AFTER you enter a number. Linux: PROGRAM HELLO INTEGER AGE PRINT '(A)', 'Hello, world. Enter your age :' READ '(A)', AGE PRINT '(A)', 'You entered :' print '(A)', AGE STOP END ken@ken-Inspiron-5755:~/fortran$ ./a.out Hello, world. Enter your age : 73 You entered : 73 Now under Unix $ ./a.out 73 Hello, world. Enter your age : You entered : 73 Thanks, Ken -- WWL 📚