You can then edit this document, making corrections, adding new text, deleting unwanted parts and copying text from other documents. These documents are seen by the computer as text files, so you can view them on the screen or send them to a printer. Choosing an editor Computing's relatively short history is littered with editors written for specific systems or because existing editors didn't suit a programmer. The choice of editor is largely a matter of individual preference and local availability. Students and others likely to move place of work may wish to experience a variety of editors or to specialise in a commonly available editor.
Editors fall into two main categories.
Screen-based editors allow you to move a cursor around by using direction keys and sometimes a mouse. The choice of editor is very much a matter of personal taste. If you are happy with an available editor that you already know, then use that and skip the rest of this. Until this is available, you will have to live with the current inferior products. To which should be added the thought that your new editor will, of course, be written in Prolog.