Generating a demonstration
In contrast to the old programs, the new programs contain very few sample rules. By recompiling, one could add further examples that seemed worth preserving in any event the command D allows the samples to be reviewed and thus is useful for presenting demonstrations. No doubt some future edition of these programs will allow rule files to be read from disk, as well as allowing the storage of interesting rules which have been found during the course of execution of a program.
Harold V. McIntosh