There exist more drastic means of interrupting the normal control flow. To invoke a recursive top level, use:
To exit from Prolog, use:
To exit from Prolog with return code Code, use:
To abort the execution of the current query and return to the top level, use:
abort/0are implemented by throwing a reserved exception, which has a handler at the top level of development systems and executables built with the
spldtool. Thus they give the opportunity for cleanup goals (see
call_cleanup/2) to run.