On 7/19/12 5:50 PM, Barton Willis wrote: > The intent of > > (setq l ($expand l)) > (cons l l)) > > is to properly return (cons 0 0) or (cons 0.0 0.0), or ... Since 0 * 0.0 > --> 0, I assumed that's what the expand was for. Let me try with (cons 0 0) and see what breaks. Ray