Data Directed Input-Output in FORTRAN A statement which is similar to the NAMELIST statement of FORTRAN IV has been incorporated in the FORTRAN 63 compiler. The FORTRAN 63 implementation allows a greater flexibility and simplicity than the FORTRAN IV feature. The Hollerith names, the location, the mode and the dimensions of a variable can be discovered by means of standard FORTRAN statements. Methods of using this information are illustrated in relation to general purpose data directed input and output routines; some other uses such as matrix manipulation are discussed. CACM January, 1967 Hassitt, A. CA670106 JB February 28, 1978 4:41 PM 1649 4 1649 1053 5 1649 1649 5 1649 1649 5 1649 1649 5 1649