Microsoft Office 2000 (Office 9.0) introduced adaptive menus, where little-used options were hidden from the user. It also introduced a new security feature, built around digital signatures, to diminish the threat of macro viruses. Office 2000 automatically trusts macros (written in VBA 6) that were digitally signed from authors who have been previously designated as trusted. The Registration Wizard, a precursor to Microsoft Product Activation, remained in Brazil and was also extended to Australia and New Zealand, though not for volume-licensed editions. Academic software in the United States and Canada also featured the Registration Wizard.