John wrote: > The advertising clause applies only to distribution. The SWI clause > appears to apply to mere use.
Here is the clause in question: 6. If you base research on SWI-Prolog and publish on this research, you must include appropriate acknowledgements and references to SWI-Prolog in your publication. Only when you publish academic results that *you* based on SWI-Prolog do you have to acknowledge. So... > What if I write a system utility in SWI Prolog? Someone might use it in > their research and not even know that they are using SWI Prolog. My intepretation would be that this is perfectly legal: either the utility was published about and then the acknowledgement is there. Or it wasn't and all is well since the potential researcher did not base *her* research on SWI-Prolog. Sic. I say, let's keep it free: it is not a major nuisance (but a minor one, i agree :) Cheers, Kristoffer -- Kristoffer Høgsbro Rose, Ph.D., prof.associé <[EMAIL PROTECTED]> Laboratoire de l'Informatique du Parallélisme équipe PLUME, bureau LR5-026 Ecole Normale Supérieure de Lyon; 46, Allée d'Italie; F-69364 Lyon 07 cedex phone: +33(0)4 7272 8642; fax:...8080 <http://www.ens-lyon.fr/~krisrose>