/*
* prototypes
*/
-int isfrom(char *);
-int lequal (unsigned char *, unsigned char *);
+int isfrom(const char *);
+int lequal (const char *, const char *);
int mfgets (FILE *, char **);
-char *legal_person (char *);
-struct adrx *seekadrx (char *);
-struct adrx *getadrx (char *);
-struct adrx *uucpadrx (char *);
+char *legal_person (const char *);
+struct adrx *getadrx (const char *);