Source:NetHack 3.4.3/include/spell.h

Below is the full text to include/spell.h from NetHack 3.4.3. To link to a particular line, write [[spell.h#line123]], for example.

/*	SCCS Id: @(#)spell.h	3.4	1995/06/01	*/
/* Copyright 1986, M. Stephenson				  */
/* NetHack may be freely redistributed.  See license for details. */

The NetHack General Public License applies to screenshots, source code and other content from NetHack.

This content was modified from the original NetHack source code distribution (by splitting up NetHack content between wiki pages, and possibly further editing). See the page history for a list of who changed it, and on what dates.

#ifndef SPELL_H
#define SPELL_H

struct spell {
short	sp_id;			/* spell id (== object.otyp) */
xchar	sp_lev;			/* power level */
int		sp_know;		/* knowlege of spell */
};

/* levels of memory destruction with a scroll of amnesia */
#define ALL_MAP		0x1
#define ALL_SPELLS	0x2

#define decrnknow(spell)	spl_book[spell].sp_know--
#define spellid(spell)		spl_book[spell].sp_id
#define spellknow(spell)	spl_book[spell].sp_know

#endif /* SPELL_H */