@footnote{See The GCC Team, ''Other Directives'',
@dfn{The C Preprocessor}, @uref{http://gcc.gnu.org/onlinedocs/cpp/}.}

@footnote{See The GCC Team, @dfn{GCC Internals Manual},
@uref{http://gcc.gnu.org/onlinedocs/gccint/}.}

@footnote{See James Craig Burley, ''Options Controlling the Kind of
Output'', @dfn{Using and Porting GNU Fortran} (The GCC Team),
@uref{http://gcc.gnu.org/onlinedocs/g77/}, for more details of the
handling of Fortran input files.}

