extern COMMAND *make_simple_command __P((ELEMENT, COMMAND *));
extern void make_here_document __P((REDIRECT *));
extern REDIRECT *make_redirection __P((int, enum r_instruction, REDIRECTEE));
extern COMMAND *make_simple_command __P((ELEMENT, COMMAND *));
extern void make_here_document __P((REDIRECT *));
extern REDIRECT *make_redirection __P((int, enum r_instruction, REDIRECTEE));