An owner-manual is a document that provides instructions and guidelines on how to use a product. However, there are several other phrases that can be used as a synonym for owner-manual. User manual, user guide, instruction manual, operation manual, and product manual are all commonly used terms for an owner-manual. The purpose of these manuals is to assist the user in understanding the various features and capabilities of a product, and how to effectively use it. Regardless of the term used to describe them, these manuals are an essential part of any product and can help users enhance their overall experience with the product.