[Zxzvm] Informatory: A Not Very Interactive Pastiche with Tutorial Pretensions (1998, William J. Shlaer). Made by William J. Shlaer. Photo from ZX Spectrumania GamebaseZX GameBase [Zxzvm]_Informatory:_A_Not_Very_Interactive_Pastiche_with_Tutorial_Pretensions William_J._Shlaer 1998