Stxit (Paperback)

High Quality Content by WIKIPEDIA articles! STXIT was an IBM System/360 series mainframe computer macro instruction under the DOS/VSE operating system, and was also available for the Univac 90/60 series mainframe running its TOS/DOS operating system and later on its VS/9 operating system. The macro was an abbreviation of the term "Set Exit," and was used by programs written in assembly language. It is used to create a recovery routine in the event of program errors, similar to signal handlers in C and Try/Finally blocks in C++ and other object oriented languages.