Additionally, magical properties of the tower are improved by the addition of a series of spells caste on the stones themselves as the tower is constructed. ((The specific spells are not given in the text.))
Exceptional results can be had to enchantment done in the magic rich environment of a well built tower.
Think of this book as a calculus book to mages. Very interesting, full of cute curly queue symbols, magic references and liable to put you to sleep quickly.