Programming and English text writing are creative activities that usually require editing, and both kinds of editing can be enhanced via computer. Microprocessors with as little as 4 kbytes of memory can be used. Choice of hardware and its limitations are discussed. Differences between program editing and English text editing can be reflected in software but are note incompatible. Software features such as scrolling, indexing and word wrap are described along with editing functions such as `insert' and `delete'.