[Oberon] Anonymous procedure?

[Skulski, Wojciech]

Peter: 

>Can an anonymous procedure be assigned to a procedure
>variable in any Oberon language.  Illustrated hypothetically
>by this.
>(* Assign anonymous null procedure to Append. *)
>PROCEDURE NullifyAppend*(); BEGIN Append := PROCEDURE BEGIN END END NullifyAppend;

What is the motivation?

If I am not mistaken, you can assign NIL, which becomes an anonymous procedure which stops the execution when called. Is this what you need?

Wojtek