Anyone who has used Chicago Manual of Style, or any style guide for that matter, will know that sometimes the rules seem arbitrary or contradictory and full of exceptions. Here are three often confused rules and their many exceptions.
Style guides and style sheets are both important documents to use when editing. Both style guides (standard and in-house) outline the style, grammar, and layout guidelines that the manuscript should follow. Editors should be familiar with both style guides and consistently apply them to the manuscript. Style sheets are just as important, and as an editor, you should always be sure that you match what is on the style sheet for the manuscript you are working on.