address. Used mostly to cause a core dump for debugging purposes by referencing address 0 or -1. (%%closure env code) This is a low-level routine which should not be invoked in normal code. If code is a cons list of frames, and the application of the closure will invoke the interpreter. Otherwise, code should be of type tc_subr_X and the application of the closure will pass the env as the first argument to implementing the subr. (%%closure-code closure) This is a low-level routine which should not be invoked in normal code. Returns the code passed to %%clo- sure. (%%closure-env closure) This is a low-level