The Fountain Code Has Been Tightened Slightly So You Can No Longer Dip Objects
Into A Fountain Or Drink From One While You Are Floating In Mid-air Due To
Levitation.
The fountain code has been tightened slightly so you can no longer dip objects
into a fountain or drink from one while you are floating in mid-air due to
levitation.
Teleporting to hell via a teleportation trap will no longer occur if the
character does not have fire resistance.
-- README file from the NetHack game