SWI-Prolog tracer version 0.4 * Start XPCE/SWI-Prolog. Requires pl-3.4.5 and xpce 5.0.11. * Load tracer by calling: ?- guitracer. * Do normal tracing actions: ?- trace, mygoal. Comments/bugs to: Jan Wielemaker jan@swi.psy.uva.nl