/ACCEPT

    /ACCEPT=(option[,option])

 Allows the compiler to accept C language syntax that it might not
 normally accept.

 VSI C accepts slightly different syntax depending upon the
 compilation mode specified with the /STANDARD qualifier.  The
 /ACCEPT qualifier can fine tune the language syntax accepted by
 each /STANDARD mode.

 Specify one of the following qualifier options:

  [NO]C99_KEYWORDS      Controls whether or not the C99 Standard
                        keywords inline and restrict (which are are
                        in the C89 namespace for user identifiers)
                        are accepted without double leading
                        underscores.  The spelling with two leading
                        underscores (__inline, __restrict) is in the
                        namespace reserved to the compiler
                        implementation and is always recognized as a
                        keyword regardless of this option.

                        In /STANDARD=RELAXED mode, the default is
                        C99_KEYWORDS.  In all other compiler modes,
                        the default is NOC99_KEYWORDS.

  [NO]GCCINLINE         The gcc compiler implements an inline
                        function qualifier for functions with
                        external linkage that gives similar
                        capabilites as the C9x extern inline feature
                        for functions, but the usage details are
                        somewhat different:  the combination of
                        extern and inline keywords makes an inline
                        definition, instead of the exlusive use of
                        the inline keyword without the extern
                        keyword.  This option controls which
                        variation of the feature is implemented.

                        In all compiler modes, the default is
                        NOGCCINLINE.

  [NO]TRIGRAPHS          Turns trigraph support on or off.  In
                        COMMON and VAXC compiler modes, trigraphs
                        are disabled by default.  In all other
                        modes, they are enabled by default.

  [NO]VAXC_KEYWORDS     Controls whether or not the compiler
                        recognizes the VAX C keywords (such as
                        "readonly") regardless of the /STANDARD mode
                        used.

  [NO]RESTRICT_KEYWORD  Controls whether or not the compiler
                        recognizes the C9x standard restrict keyword
                        regardless of the /STANDARD mode used.

                        This only affects recognition of the
                        spelling of the keyword as proposed for
                        inclusion in the C9x standard.  The spelling
                        with two leading underscores, __restrict, is
                        in the namespace reserved to the compiler
                        implementation, and it is always recognized
                        as a keyword regardless of this option.

                        Note that [NO]RESTRICT_KEYWORD is a subset
                        of [NO]C99_KEYWORDS.  They have the same
                        compiler-mode defaults.

The default values are based upon the settings of the /STANDARD
qualifier:

For /STANDARD=RELAXED the default is:
 /ACCEPT=(VAXC_KEYWORDS,C99_KEYWORDS,NOGCCINLINE,TRIGRAPHS)

For /STANDARD=VAXC, the default is:
 /ACCEPT=(VAXC_KEYWORDS,NOC99_KEYWORDS,NOGCCINLINE,NOTRIGRAPHS)

For /STANDARD=COMMON, the default is:
 /ACCEPT=(NOVAXC_KEYWORDS,NOC99_KEYWORDS,NOGCCINLINE,NOTRIGRAPHS)

For /STANDARD=C99 or /STANDARD=LATEST, the default is:
 /ACCEPT=(NOVAXC_KEYWORDS,C99_KEYWORDS,NOGCCINLINE,TRIGRAPHS)

In all other modes, the default is:
 /ACCEPT=(NOVAXC_KEYWORDS,NOC99_KEYWORDS,NOGCCINLINE,TRIGRAPHS)