This version of MuPAD for Macintosh is fully functional with respect to its mathematical capabilities, the frontend and all documentation. It has, however, a built-in memory-limitation, that prevents the evaluation of larger examples or longer calculations. To remove the limitation apply for your personal license and register your copy of MacMuPAD (registering is free for education & research). Note that the registration keys have changed for version 1.4. Users of earlier versions need a new key. For details refer to our web pages at: http://www.sciface.com/mupad_download/reg_form.html or send eMail to distribution@sciface.com or contact SciFace Software GmbH & Co. KG Technologiepark 12, D-33100 Paderborn Germany Tel. +49 5251 640751 Fax. +49 5251 640799