spawn
answer_next(struct spawn *sp)
struct spawn *sp;
struct spawn *Spawn = NULL;
struct spawn *sp;
struct spawn *sp, *spnext;
struct spawn * next;
struct spawn ** prevnext;
extern struct spawn * Spawn;
int answer_next(struct spawn *);
int spawn(struct cmd *, struct cmd *);
pid = spawn(cmd, cmds);
void spawn(int, short, void *);
spawn(ctrl, 0, sep);
spawn, sep);