By default, the TPU-based EVE editor is invoked when you
    isssue the EDIT command. You can use the SET EDITOR command to
    select a different editor to edit messages and files. The SHOW
    EDITOR command displays the name of the editor.

    Formats

      SET EDITOR  editor-name

      SHOW EDITOR

1  –  Parameter

 editor-name

    Indicates the name of the editor. You can use any callable editor
    available on your system.

2  –  Example

  MAIL> SHOW EDITOR
  Your editor is TPU

  MAIL> SET EDITOR EDT
  MAIL> SHOW EDITOR
  Your editor is EDT

  MAIL> SEND/EDIT
  To: WHITE::STAFFORD
  Subject: Manufacturing Office

      This example shows how to change the editor from the default
      TPU EVE editor to the EDT editor. Enter the command SEND
      /EDIT to edit the text of a message. Send the message by
      pressing Ctrl/Z.