Compatibility_Features

 VSI Fortran provides the following language features to
 facilitate compatibility with other versions of Fortran:

  o  The DEFINE FILE, ENCODE, DECODE, and FIND statements

  o  An alternative syntax for the PARAMETER statement

  o  The VIRTUAL statement

  o  The AND, OR, XOR, IMAG, LSHIFT, and RSHIFT intrinsic functions

  o  An alternative syntax for octal and hexadecimal constants

  o  An alternative syntax for a record specifier

  o  An alternative syntax for the DELETE statement

  o  An alternative form for namelist external records

  o  Record structures

  o  VSI Fortran pointers

 These language features are particularly useful in transporting
 older Fortran programs to systems on Alpha processors.  However,
 you should avoid using them in new programs on these systems, and
 in new programs for which portability to other Fortran 95 or
 Fortran 90 implementations is important.

Additional information available:

DEFINE_FILE     DELETE          ENCODE_and_DECODE               FIND
Intrinsic_Functions             Namelist_Record Octal_Hex_Syntax
PARAMETER       Record_Specifier_Syntax         Record_Structures
VIRTUAL         HP_Fortran_POINTER