[345,5] RATFOR - A RATFOR PREPROCESSOR FOR RSX11D RATFOR (RATIONAL FORTRAN) IS A LANGUAGE BASED ON FORTRAN. TO FORTRAN, RATFOR ADDS MODERN CONTROL SURUCTURES INCLUDING IF-ELSE, WHILE, REPEAT-UNTIL, FOR, BREAK, AND NEXT. RATFOR STATEMENTS ARE FORMAT-FREE. THIS VERSION OF RATFOR IS BASED ON THE DESCRIPTION BY KERNIGHAN AND PLAUGER IN THEIR BOOK "SOFTWARE TOOLS" (ADDISON-WESLEY, DON MILLS, ONTARIO, 1976). OPERATING SYS : RSX11D V6.2 HARDWARE REQ'D: SOFTWARE FORM : SOURCES, COMMAND FILES PREREQUISITES : F4P DOC. FORMAT : RUNOFF (AECL) CONTACT : D.S. ARGUE, ATOMIC ENERGY OF CANADA, CHALK RIVER, ONTARIO.