The ProXL error handler, if installed, will print a reasonably intelligent error message and then act according to the user-specified options. By default, it presents the following prompt and waits for user input:
ProXL Error Handler (h for help)?
Th options available are:
ProXL Error options: c continue - do nothing t trace - debugger will start creeping d debug - debugger will start leaping a abort - cause Prolog abort e exit - irreversible exit from Prolog A Abort - cause Prolog abort and set this mode as the default h help - print this message