A manuscript is a written document, especially an author's original version of a book before it gets published. When a writer finishes typing their novel, that file on their computer is their manuscript. They send it to publishers hoping someone will want to print and sell it. Editors read through manuscripts, suggesting changes to make the story better or fix mistakes before the book reaches bookstores.

Before the printing press was invented around 1450, all books were manuscripts, written by hand. Medieval monks spent years carefully copying books by hand, creating beautiful illuminated manuscripts with decorated letters and colorful illustrations. These handwritten manuscripts were incredibly valuable because each one took so long to create.

Today, most manuscripts are typed on computers, but we still use the old word. Scientists submit manuscripts of their research to journals. Historians study ancient manuscripts to learn about the past. When people discover a lost manuscript by a famous author, it becomes major news. A manuscript is where the creative work happens, that crucial step between an author's imagination and a finished book on your shelf.