to determine when forward-chaining reports are printed

Examples:  (set-fc-report-on-the-fly t)
           (set-fc-report-on-the-fly nil)

If the flag is set to t, forward chaining tracking reports are printed when forward chaining occurs. If the flag is set to nil, very short reports (giving just the caller and the report number) are printed during forward chaining but you can use fc-report to see the full report afterwards.

Since nothing is tracked when the criteria is nil, this function also prints out the current criteria to remind you of what it is. The flag manipulated by this function does not shut off tracking. It only determines whether reports are printed on-the-fly or not. To shut off tracking set-fc-criteria.

See forward-chaining-reports for details.