Automatic control of execution
Philip S. Abrams, John W. Myrna · ACM SIGAPL APL Quote Quad · 1979
Automatic Control of Execution or ACE is a family of APL system extensions designed to automate manual interactions with the APL system. Such extensions are required for building robust, automatic, and cost-effective production programs in APL. Based on an architecture derived from the concept of an “automatic user,”the ACE features provide an orthogonal but harmonious set of system primitives that satisfy this requirement. The ACE features are Detached Execution, Detached I/O, Exception Handling, Deferred Execution, and a System Communication Facility. Each is described in contrast with its manual counterpart.