# Index O

    OBJCOMMENT directive,  [+]
    Object
      See Data objects
    Object file
      See Object module
      See also your user manual or programmer's guide
    Object libraries
      searching for block data program units in, [+]
    Object module
      identifying with compiler directives, [+]
    Obsolescent features
      in Fortran 90, [+]
      in Fortran 95, [+]
    Octal constants,  [+]
      alternative syntax for, [+]
      assigning with DATA statement, [+]
      data type assignments of, [+]
      examples of, [+]
    Octal values
      transferring, [+]
    O edit descriptor,  [+]
    OLD value
      for OPEN (STATUS)
         on U*X, WNT, W9*, [+]
         on VMS, [+]
    ONLY keyword
      in USE statement, [+]
    ONTO clause
      for DISTRIBUTE directive (TU*X), [+]
    OPENED specifier
      in INQUIRE statements
         on U*X, WNT, W9*, [+]
         on VMS, [+]
    OPEN statements
      on U*X, WNT, W9*, [+] to [+]
      on VMS, [+] to [+]
      See also your user manual or programmer's guide
      ACCESS specifier in
         on U*X, WNT, W9*, [+]
         on VMS, [+]
      ACTION specifier in
         on U*X, WNT, W9*, [+]
         on VMS, [+]
      ASSOCIATEVARIABLE specifier in
         on U*X, WNT, W9*, [+]
         on VMS, [+]
      BLANK specifier in
         on U*X, WNT, W9*, [+]
         on VMS, [+]
      BLOCKSIZE specifier in
         on U*X, WNT, W9*, [+]
         on VMS, [+]
      BUFFERCOUNT specifier in
         on U*X, WNT, W9*, [+]
         on VMS, [+]
      CARRIAGECONTROL specifier in
         on U*X, WNT, W9*, [+]
         on VMS, [+]
      CONVERT specifier in
         on U*X, WNT, W9*, [+]
         on VMS, [+]
      DEFAULTFILE specifier in
         on U*X, WNT, W9*, [+]
         on VMS, [+]
      defaults for specifiers
         on U*X, WNT, W9*, [+]
         on VMS, [+]
      DELIM specifier in
         on U*X, WNT, W9*, [+]
         on VMS, [+]
      DISPOSE specifier in
         on U*X, WNT, W9*, [+]
         on VMS, [+]
      EXTENDSIZE specifier in (VMS), [+]
      FILE specifier in
         on U*X, WNT, W9*, [+], [+]
         on VMS, [+], [+]
      FORM specifier in
         on U*X, WNT, W9*, [+]
         on VMS, [+]
      general description of
         on U*X, WNT, W9*, [+]
         on VMS, [+]
      IOFOCUS specifier in (WNT, W9*), [+]
      KEY specifier in (VMS), [+]
      MAXREC specifier in
         on U*X, WNT, W9*, [+]
         on VMS, [+]
      MODE specifier in
         on WNT, W9*, [+]
      NAME specifier in
         on U*X, WNT, W9*, [+]
         on VMS, [+]
      NOSPANBLOCKS specifier in (VMS), [+]
      ORGANIZATION specifier in
         on U*X, WNT, W9*, [+]
         on VMS, [+]
      PAD specifier in
         on U*X, WNT, W9*, [+]
         on VMS, [+]
      POSITION specifier in
         on U*X, WNT, W9*, [+]
         on VMS, [+]
      READONLY specifier in
         on U*X, WNT, W9*, [+]
         on VMS, [+]
      RECL specifier in
         on U*X, WNT, W9*, [+]
         on VMS, [+]
      RECORDSIZE specifier in
         on U*X, WNT, W9*, [+]
         on VMS, [+]
      RECORDTYPE specifier in
         on U*X, WNT, W9*, [+]
         on VMS, [+]
      SHARED specifier in
         on U*X, WNT, W9*, [+]
         on VMS, [+]
      SHARE specifier in
         on WNT, W9*, [+]
      STATUS specifier in
         on U*X, WNT, W9*, [+]
         on VMS, [+]
      TITLE specifier in (WNT, W9*), [+]
      TYPE specifier in
         on U*X, WNT, W9*, [+]
         on VMS, [+]
      USEROPEN specifier in
         on U*X, WNT, W9*, [+]
         on VMS, [+]
    OpenMP Fortran parallel directives (TU*X), [+] to [+]
      ATOMIC directive, [+]
      BARRIER directive, [+]
      CRITICAL directive, [+]
      DO directive, [+]
      FLUSH directive, [+]
      MASTER directive, [+]
      ORDERED directive, [+]
      PARALLEL directive, [+]
      PARALLEL DO directive, [+]
      PARALLEL SECTIONS directive, [+]
      SECTIONS directive, [+]
      SINGLE directive, [+]
      THREADPRIVATE directive, [+]
    Operands,  [+]
      and binary operators, [+]
      and unary operators, [+]
      operating on pair of operands, [+]
      operating on single operand, [+]
    Operations
      character, [+]
      complex, [+]
      conversion to higher precision, [+]
      defined, [+], [+]
      integer
         conventions for determining, [+]
      numeric, [+] to [+]
      real
         conventions for determining, [+]
      relational, [+]
    OPERATOR interface specifier
      for functions, [+], [+], [+]
    Operators,  [+]
      character, [+]
      defined, [+]
      exponential
         in initialization expressions, [+]
      extended intrinsic
         properties of, [+]
      logical, [+]
      numeric, [+]
      operating on pair of operands, [+]
      operating on single operand, [+]
      precedence in
         logical expressions, [+]
         numeric expressions, [+]
         relational expressions, [+]
      scope of, [+]
    Optimization
      See also your user manual or programmer's guide
      preventing with VOLATILE statement, [+]
    Optional arguments,  [+]
      function returning presence of, [+]
    OPTIONAL attribute and statement,  [+], [+]
      attributes compatible with, [+]
    OPTIONS directive,  [+]
    OPTIONS statements,  [+]
      position in program unit, [+]
    .OR.
      See Logical operators
    Order of
      elements in an array, [+]
      statements, [+]
      subscript progression, [+]
    OR function,  [+]
    ORDERED
      clause (TU*X)
        for DO directive, [+]
        for PDO directive, [+]
      directive (TU*X), [+]
    ORGANIZATION specifier
      in INQUIRE statements
         on U*X, WNT, W9*, [+]
         on VMS, [+]
      in OPEN statements
         on U*X, WNT, W9*, [+]
         on VMS, [+]
    Output statements,  [+] to [+]
      PRINT and TYPE, [+]
      REWRITE, [+]
      WRITE, [+] to [+]

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