Check copy is a process used to ensure accuracy in documents. It involves four steps: EDIT, reread, EDITS, and CLONE. Editing is the first step, which involves making sure that all of the information is correct and that any mistakes are corrected. Rereading is the second step, which involves reading the document again to make sure that all of the changes have been made correctly. EDITS is the third step, which involves making any additional changes that may be needed. Finally, CLONE is the fourth step, which involves creating an exact copy of the document for future reference.