Hello world!


      PROGRAM HELLO_WORLD
C THE FORTRAN 77 HELLO WORLD PROGRAM. NOTE CORRECT USE OF
C INDENTATION TO MAINTAIN BACKWARDS COMPATIBILITY WITH
C PUNCH CARDS, AND ALL CAPS TO MAINTAIN PROPER STIFFNESS.
C THIS PROGRAM, HOWEVER, WILL STILL NOT COMPILE
C (SYNTAX ERROR: MISSING BLUE TIE)
      IMPLICIT NONE
      PRINT *,* 'HELLO, WORLD!'
      END