e-text is a general term for any document that is read in digital form, and especially a document that is mainly text. For example, a computer-based book of art with minimal text, or a set of photographs or scans of pages, would not usually be called an "e-text". An e-text may be a binary or a plain text file, viewed with any open source or proprietary software. An e-text may have markup or other formatting information, or not. An e-text may be an electronic edition of a work originally composed or published in other media, or may be created in electronic form originally. The term is usually synonymous with e-book.