0a1,2
> #ifndef _REGEN_H
> #define _REGEN_H
2c4
< extern void	regen_class(CLASS *class, double harvest, int period);
---
> #include "defs.h"
3a6,8
> /*extern*/ void	regen_class(TIMBER_CLASS *timber_class, double harvest, int period);
> 
> #endif