if (next_return_point){
next_return_point--;
switch(return_point[next_return_point]){
case 0:
error(3);
break;
case 21:
goto RETURN_21;
break;
case 22:
goto RETURN_22;
break;
case 23:
goto RETURN_23;
break;
case 24:
goto RETURN_24;
break;
}
}
error(3);