Uncheck to allow code using extensions to the FORTRAN 77 standard.  This includes features such as longer identifier names and IMPLICIT statements.  Note that such FORTRAN code is less likely to be portable.

Check to flag code using any extension of the FORTRAN 77 standard as an error.  This makes it more likely that the code will be acceptable to other FORTRAN compilers.

Uncheck to get warnings when COMMON and/or EQUIVALENCE statements force doubles to start on odd-word boundaries (this would make the resulting C program run very slowly on your Macintosh).

You cannot uncheck this option if the “Suppress all warnings” option is checked.

Check to turn off warnings whenever COMMON and/or EQUIVALENCE statements force doubles to start on odd-word boundaries (this would make the resulting C program run very slowly on your Macintosh).

Uncheck to get warnings about FORTRAN statements whose interpretation is different under FORTRAN 66 rules (e.g., DO loops).

You cannot uncheck this option if the “Suppress all warnings” option is checked.

Check to turn off warnings about FORTRAN statements whose interpretation is different under FORTRAN 66 rules (e.g., DO loops).

Uncheck to get warning messages in addition to error messages.

Check to turn off warning messages of any kind.  You will still get error messages.

Uncheck to produce C code without embedded line numbers.

Check to include the original FORTRAN line numbers as #line preprocessor directives in the C code.

Uncheck to produce C code without embedded FORTRAN code.

Check to include the original FORTRAN code as comments in the C code.