The Toronto PET Users Group uses the GEOS environment, what year was GEOS released?
Toronto PET Users Group: The Toronto PET Users Group is one of the world's oldest extant computer user groups, and was among the very largest. Toronto PET Users Group:  It supports nearly all Commodore computers, including the PET, VIC-20, C64, C128, Plus/4, C16, C65, and Amiga, including the COMAL, CP/M and GEOS environments. GEOS (8-bit operating system):  Originally designed for the Commodore 64 and released in 1986, it provides a graphical user interface for this popular 8-bit computer.
1986