Statements of the form PRINT*, READ*, or WRITE* are not allowed.
All I/O is of the form:
READ ( <unit number> [, <format identifier> ] ) <iolist>
WRITE ( <unit number> [, <format identifier> ] ) <iolist>
Refer to pages 81 through 86 of the Apple FORTRAN Language Reference Manual
for more information on the OPEN, READ, and WRITE statements.