IBM’s first offering for the New Year is an Integrated Reasoning Shell, a knowledge-based system family of software products to enable users to build and run knowledge-based applications in a multi-platform environment more efficiently within the AD-Cycle and System Application Architecture frameworks. Knowledge bases under the new shell can be developed on the PS/2 under OS/2 and on the RT under AIX using the development system, and can be designed to run under OS-2, AIX-RT and VM and MVS with the appropriate Runtime System. It costs a one-time $7,500 for the Development System and $750 for the PS/2 and RT Runtime Systems; the 370 Development System is $11,000 to $113,000 and the 370 Runtime System from $3,000 to $28,000 for the Runtime System, and will be available in the US next July.