/* S O M E G L O B A L V A R I A B L E S */ extern char options[]; /* indicating which options were given */ extern char *input; /* name of required filevariable */ extern char *output; /* name of required filevariable */ extern struct def *program; /* definition of the program compiled */ extern int proclevel; /* nesting level of procedures */ extern int err_occurred; extern label data_label; extern label text_label;