The EDIT command tells the system that you want to edit a file. If you type EDIT without a file name, the system prompts for a filename. See the next section for Line Mode Editing. Once the editor has been called, the default is Full Screen mode. Even if you can use the full screen editor's capabilities there may be times you might want to use line mode editing.
EXIT Leaves the editor.
Write and save the contents of the editor buffer in a new file. QUIT Leaves the editor. Discard the contents of the editor buffer. The numeric keypad on the computer keyboard provides a number of special function keys that can be pressed for special functions to occur while working with the EDT Editor. That is, when you press a key, the function written on the top of the key is activated.