To add to the many find and replace issues that have shown up, at one point TSR's style guide for D&D material said that "wizard" had to be used to the exclusion of "mage". So when proofs of a book arrived where the authors had used "mage" they did a find and replace job.

Resulting in such lines as "The tower can take up to 200 points of dawizard before it is destroyed. Dawizard sustained is cumulative." and references to a spell called "Silent Iwizard".