This folder contains stuff about writing your own external predicates for Open Prolog. For example, if you want Open Prolog to play back Quicktime Movies, then you could write an external predicate for this.
The MPW makefile presumes that this folder is in another folder that contains a master copy of Open Prolog. When you build Open Prolog (using the Build… menu), the makefile will cause MPW to copy the master Open Prolog into this folder. The external predicates will be compiled, libbed, linked, and inserted into the copy in this folder, leaving your master copy untouched. If you change the hierarchy of folders, the makefile will need alteration. If you can't figure out what this means, maybe you should get some help…
Enjoy yourself, and let us know what you are doing.
