Additional Language Features

The following are language extensions that facilitate compatibility with other versions of Fortran:

• DEFINE FILE statement
• ENCODE and DECODE statements
• FIND statement
• An alternative syntax for the PARAMETER statement
• VIRTUAL statement
• AND, OR, XOR, IMAG, LSHIFT, RSHIFT intrinsics (see the A to Z Reference)
• FORTRAN-66 Interpretation of the EXTERNAL statement
• An alternative syntax for octal and hexadecimal constants
• An alternative syntax for an I/O record specifier
• An alternate syntax for the DELETE statement
• An alternative form for namelist external records
• The Compaq Fortran 77 POINTER statement
• Record structures