TomeNET

(5.10) Destruction of items by elemental attacks                                
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Items in your inventory can be destroyed if you are hit by an elemental
attack. Those attacks even have a very slim chance of destroying an item
that you have equipped!

In order for an item to guaranteedly survive such an attack, you must either
be immune or double-resisting (have permanent AND temporary resistance) to
that specific element. (Double resistance is nearly as good as immunity.)
Some items have IGNORE_xxx flags which let them ignore certain elements,
preventing them from being destroyed.
All artifacts, random and static ones, cannot be harmed by elemental attacks
of any type.

Here is a table of items and which elements they are susceptible against:
"Impact" happens if you fall into a pit, smashing some potions on hitting the
floor. Items that IGNORE_COLD also resist impact damage.
Usually items that contain wood, leather or stuff are susceptible to fire and
acid, while things that consist only of metal are just susceptible to acid.

            Acid    Elec    Fire    Cold    Impact  Water
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Arrows      x               x
Bolts       x               x
Pebbles
Shots

Slings      x               x
Bows        x               x
Crossbows   x               x
Boomerangs  x               x

Swords      x
Axes        x               x
Blunt       x               x
Polearms    x               x

Helms       x
Crowns      x
Shields     x

Boots       x               x
Gloves      x               x
Cloaks      x               x
Soft Armour x               x
Hard Armour x
DSM Armour

Scrolls     x               x                       x
Parchments  x               x
Chests      x               x
Skeletons   x
Bottles     x                       x       x
Junks       x

Rings               x
Amulets
Wands               x
Staves      x               x
Rods

Lamps                       x
Potions                     x       x       x
Flasks                              x       x
Books/Tomes x               x                       x


Items, even tomes, resist certain elements if they have the according
resistance due to ego powers (for example a leather shield of resist fire)
or -in case of tomes- according content :)
For example a Tome of the Eternal Flame cannot be harmed by fire.