The Chicago Manual of Style, Associated Press Stylebook, MLA Style Manual and Guide to Scholarly Publishing, and New York Times Manual of Style and Usage: these are just a few of the style guides available to editors, and they are one of the most important tools an editor can have.
Why are style guides so important? Close observers of the English language may notice that many elements of written works vary from publication to publication. These elements include capitalization, punctuation, hyphenation, and the treatment of numbers, units of measurement, and other terms that occur frequently, all of which are the natural province of a copyeditor (see Levels of Editing for more about the different levels of editing). Read more..