REFRESH

    Repaints the whole screen, erasing any extraneous characters (such as
    those caused by noise on a communication line), and repositions the
    text so the screen represents the last known state of the editing
    context.

    REFRESH redraws each line of each window mapped to the screen.  The
    prompt area is erased.  The screen changes immediately:  even if
    REFRESH is done from within a procedure, VAXTPU does not wait until the
    entire procedure is completed to execute REFRESH.

 Example

    The following procedure erases the message buffer and repaints the
    screen:

    PROCEDURE user_repaint
       ERASE (message_buffer);
       REFRESH;
    ENDPROCEDURE;

 Related topics

    MESSAGE    UPDATE