The 2.PAK language
is an artificial intelligence
language with coroutines
It is based on the 1.PAK and the Simula 67 languages and it was designed in 1975. The main goal of its design was to provide a good set of primitive types for the AI applications.
- The 2.PAK Language: Goals and Description, L.F. Melli, Proc IJCAI 1975.