I've been programming for a while in AutoLisp and some times in VLisp, but I 'discovered' out in a few days de command ACET-CALC-ROUND. My question is , where can I find help about all ACET commands ? Because when I click help on those commands in the AutoCad Help Window appears "Page not Found".Like a Internet Explorer window. Is there any way to descover how to work with those commands ? Thanks in advance for a reply ! Vxc