-int lex_token(struct lex_file *);
-void lex_reset(struct lex_file *);
-void lex_close(struct lex_file *);
-struct lex_file *lex_open (FILE *);
+int lex_token (struct lex_file *);
+void lex_reset (struct lex_file *);
+void lex_close (struct lex_file *);
+struct lex_file *lex_include(struct lex_file *, char *);
+struct lex_file *lex_open (FILE *);