Introduction

The manipulation of text files is vital in a program development environment. For example, to create and modify:

• Source code.
• Command files.
• Documentation and notes.

To do this we need an interactive text editor, ``the programmer's word processor.'' A typical editor will allow us to:

• Create a text file.
• Move through and look at the contents of a text file.
• Locate specific text strings within a file.
• Modify a file by:
  • Inserting and deleting text.
  • Replacing specific strings in all or part of a file.
  • Moving or copying sections of a file.
  • Copying all or part of another text file into the file you are editing.

In addition, we will expect the editor to be easy and safe to use. The Digital VAX/VMS editor is EVE, the Extensible VAX Editor.