With the help of GPSS, you can effectively simulate the functioning of shopping establishments, ports, traffic, military operations, the work of editorial offices, institutions and the Internet, various mass service systems and much more. GPSS World is a powerful universal modeling environment for both discrete and continuous processes, designed for professional modeling of a wide variety of processes and systems. The book contains a description of the structure of the GPSS World environment. The main stages of programming are presented. General concepts and definitions of GPSS simulation language. are given Special attention is paid to the development of programs in this language . Schreiber - GPSSGPSS User Manual - from publisherGPSS Tutorial - from publisher