- (void) appendFormat:(OBString *)format, ...

- (void) appendString:(OBString *)string

- (void) deleteCharactersInRange:(OBRange)range

- (void) insertString:(OBString *)string atIndex:(ULONG)index

- (void) replaceCharactersInRange:(OBRange)range withString:(OBString *)string

- (void) setString:(OBString *)string