WORK ON GALLEYS is a job description that involves three distinct tasks: PROOFREAD (9 letters), EDIT (4 letters), and TYPESET (7 letters). Proofreading involves reading through a document to identify and correct any errors in grammar, spelling, punctuation, or formatting. Editing involves making changes to the content of a document to improve its clarity, accuracy, and readability. Typesetting involves formatting a document for publication, including setting margins, font size, and line spacing.