Editing that is intended to catch spelling errors, grammatical errors, and other typos in all text before it is sent to the printer. Copy editors also ensure that all text abides by proper style, usually according to a combination of the Associate Press Style Book and the magazine's own style guide. Copy editors check all editorial copy in the magazine, including headlines, captions, credits, coverlines and bylines. Copy editors are usually not responsible for making line edits or conceptual edits in text.