if (next_return_point){
next_return_point--;
switch(return_point[next_return_point]){
case 0:
return NULL;
break;
case 1:
goto RETURN_1;
break;
case 2:
goto RETURN_2;
break;
case 3:
goto RETURN_3;
break;
}
}
if(event_return)return NULL;
error(3);
