Enter UNIX-style option switches to be passed to the F2C kernel.  These switches are appended after the other options you selected.  See AT&T Technical Report 149 (included with Mac F2C) for a description of the various UNIX options and their syntax.

Enter the maximum number of implied labels permitted either as the result of alternate returns in a CALL or as the result of a computed GOTO (UNIX option “-Nl”).

Enter the maximum number of continuation lines allowed for a single statement (UNIX option “-NC”).

Enter the maximum number of literal constants allowed in a single file (UNIX option “-NL”).

Enter the maximum numbers of names (of any kind) allowed in a single file (UNIX option “-Nn”).  This value controls the size of hash table used to store all the names that appear in the source code.

Enter the maximum allowed nesting of control structures such as loops or if-then-else statements (UNIX option “-Nc”).

Enter the maximum number of statement labels allowed in a single file (UNIX option “-Ns”).

Enter the maximum number of external symbols allowed in a single file (UNIX option “-Nx”).

Enter the maximum number of equivalence classes allowed in a single file (UNIX option “-Nq”).  An “equivalence class” consists of a set of variables that are equivalent to each other.