. "6.6.3" . . "MacsBug is a low-level (assembly language/machine-level) debugger for pre-Mac OS X Macintosh operating systems. MacsBug is an acronym for Motorola Advanced Computer Systems Debugger, as opposed to Macintosh debugger (The Motorola 68000 Microprocessor is imprinted with the MACSS acronym)."@en . . . "MacsBug"@en .