Promoting Conference for OSI. The OSI "800-pound gorilla" in Japan. Consists of executives from the six major Japanese computer manufacturers and Nippon Telephone and Telegraph. They set policies and commit resources to promote OSI. [Source: RFC1208

Posi is and was a (primarily) youth-oriented movement. People participating in this movement use it as slang for the word "positive". It promotes a positive outlook on life and support for progressive thought.

Short for Positron Blaster, another high-speed plasma weapon, more powerful than a Neutron blaster.