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diff --git a/crawl-ref/source/spl-book.h b/crawl-ref/source/spl-book.h
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+/*
+ *  File:       spl-book.h
+ *  Summary:    Some spellbook related functions.
+ *  Written by: Josh Fishman
+ *
+ *  Change History (most recent first):
+ *
+ * 22mar2000   jmf   Created
+ */
+
+
+#ifndef SPL_BOOK_H
+#define SPL_BOOK_H
+
+#include "externs.h"
+#include "FixVec.h"
+
+
+// used in dungeon.cc, it_use3.cc, spl-book.cc, spl-book.h - {dlb}
+#define SPELLBOOK_SIZE 9
+// used in spl-book.cc, spl-book.h - {dlb}
+#define NUMBER_SPELLBOOKS 60
+
+
+// updated 24may2000 {dlb}
+/* ***********************************************************************
+ * called from: dungeon - effects - shopping
+ * *********************************************************************** */
+char book_rarity(unsigned char which_book);
+
+
+// updated 24may2000 {dlb}
+/* ***********************************************************************
+ * called from: it_use3 - item_use - spl-book
+ * *********************************************************************** */
+bool is_valid_spell_in_book( unsigned int splbook, int spell );
+
+
+// updated 24may2000 {dlb}
+/* ***********************************************************************
+ * called from: it_use3 - item_use - spl-book
+ * *********************************************************************** */
+unsigned char read_book( item_def &item, int action );
+
+
+// updated 24may2000 {dlb}
+/* ***********************************************************************
+ * called from: acr
+ * *********************************************************************** */
+bool learn_spell(void);
+
+
+// updated 24may2000 {dlb}
+/* ***********************************************************************
+ * called from: it_use3 - item_use - spl-book
+ * *********************************************************************** */
+int which_spell_in_book(int sbook_type, int spl);
+
+int staff_spell( int zap_device_2 );
+
+bool undead_cannot_memorise(unsigned char spell, unsigned char being);
+
+unsigned char spellbook_contents( item_def &book, int action,
+                                  formatted_string *fs = NULL );
+
+int count_staff_spells(const item_def &item, bool need_id);
+
+#endif