Spellbook

A spellbook + is a book containing runes describing some spell. To attempt to memorise the spell, you must read the spellbook. (This obviously breaks the illiterate conduct.) If the spellbook is too difficult, you will not learn the spell, and instead harmful effects will happen: you might become blind, or you might lose all of your gold.

A cursed spellbook can also cause these harmful effects. Thus in general, never read a cursed spellbook. You can use holy water to uncurse the spellbook.

If you have a blank spellbook and a magic marker, then you can try to write the spellbook of any spell that you know.

Spellbooks versus closed doors
It is possible to drop one or more items in a doorway, with the top item being a brown spellbook. If your tty has color, than a brown spellbook looks like a closed door, because both use a brown plus sign.

If your tty does not have color, you might confuse any spellbook with a closed door.

Either way, attempting to use the [o] command on a doorway that contains a spellbook will fail with, "You see no door there." The [o] command only opens doors, not spellbooks. Further, the spellbook will not stop monsters from crossing the doorway.

List of spellbooks

 * spellbook of force bolt
 * spellbook of identify
 * spellbook of light
 * spellbook of protection