[en] CPS(Computerized Procedure System) for KNGR(Korean Next Generation Reactor) is as a kind of operator aid system. Presentation of KNGR CPS is similar to the format of paper procedures. But the CPS has higher level of automation than paper. It is fully integrated with control and monitoring systems. Combining statements and relevant components, which changes dynamically according to plant status enhances readability of procedure. Moreover surveillance engine of CPS is constantly monitoring plant status and operator actions. CPS informs operators of the violation if necessary. And its MMI is designed to comply with ergonomic principles. This paper shows functions and design characteristics of CPS prototype for KNGR