lots of code
..
..

sub foo {
  this;
  that;
  if (cond) {
    CODE: many lines of code here;
  } else {
    for (a loop) {
	something based on $_;
       CODE: many lines of code here;
    }
  }
}

##</code><code>##

lots of code
..
..

sub foo {
  this;
  that;
  if (cond) {
    bar();
  } else {
    for (a loop) {
      something based on $_;
      bar();
    }
  }
	
  subsub bar {
    CODE: many lines of code here;
  }
}