What do editors mean when they say "copy edit"?
Different editors have different ideas about what a copy edit entails. So it's important to have a clear understanding of what is going to happen before you sign an editorial agreement.

What should you expect from a copy edit?
A copy edit cleans up mistakes in grammar and punctuation, and comments on (or fixes) a wide variety of other issues, including problems with logic, word usage, consistency, style, and tone, all while maintaining the author's voice and intention. It's an intense process. If anyone tells you they'll have your 85,000-word manuscript copy edited by the next day, run the other way! A copy edit of that size should take a few weeks, depending on the level of edit required.  

What will I do for you?

• use MS Word Track Changes, so you'll be able to see my suggestions
• comment regularly so that you know why I’m suggesting changes
• keep a style sheet to ensure consistency throughout your work
• correct errors in grammar, punctuation, and spelling, but make exceptions as necessary
• fix problems with usage, being particularly aware of words that are commonly confused (e.g., compliment, complement)

• make or suggest changes to reduce wordiness and repetition of terms and phrases
• comment on problems with logic and suggest changes
• notice inconsistencies in characters and suggest changes
• tighten dialogue and point out inconsistencies in voice and tone
• focus on preserving the author's voice