Er... yes. It works exactly how you'd expect it to. Or, at least, how I'd expect it to. What did you try? What happened when you tried it?

sub a_subroutine {
  print "this is a subroutine\n";
}

sub another_subroutine {
  print "this is another subroutine\n";
  a_subroutine();
}

another_subroutine();
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