A portable diagnostic facility for SNOBOL4
Ralph E. Griswold · Software Practice and Experience · 1975
Abstract In programming systems based on abstract machine modelling concepts, the underlying structure of the abstract machine can be made available to the software implemented on it. The result is an unusual facility for diagnosis and exploration of software structure. Such a facility has been added to the macro implemention of SNOBOL4. This paper describes the nature of the facility, illustrates its use, and presents some results of using it for language implementation and development.