What is a copy deck?

A few years ago I wrote an article called, “How to write a copy deck in five easy steps”. It’s still a very popular post, but a recent commenter told me I hadn’t really defined what a copy deck is. And he was right! So now I’m going to tell you all about copy decks, and how they can really help you create great copy for a website, brochure or anything else wordy. A copy deck is a single document (usually written in Microsoft Word) that contains all the necessary bits and bobs for a given copywriting project

Source: What is a copy deck? | Kate Toon Copywriter