Steve,

>Once issued does nodefault become global, or just limited to a particular context?

No, it's local only to the object/class where it's executed.

>for MyTextBox1
>proc keypress
>if the key is 24 && the down arrow key
> go to the listbox
> nodefault
>endif
>
>So now every time the down arrow is pressed, the focus moves to the listbox, even
>if the down arrow is pressed when in myTextBox2?

Since the nodefault is executed inside the IF it will only conditionally take effect.