The holes in the lid let the steam out when the lid is secured. (wholefully.com)
Using a knife, cup a few slits in the top of each calzone a few times to let steam out while cooking. (healthyfoodforliving.com)
Not - guilty verdicts in Silver's case would have let the steam out of whatever it is that the prosecutor is planning for Cuomo, and that didn't happen. (nypost.com)