From day one using a modern home computer, users are exposed to the concept of a program. Support for separate programs is, after all, the main value-add of multitasking operating systems. But—if we take a peek under the hood—a program is a high-level term which refers to many lower level mechanisms and concepts, and it isn’t obvious from the outset how they’re all arranged.To unpack debuggers—programs which analyze the execution of other programs—it’s important that we first unpack the concept ...