> I think this information should be individualized per function. Each > would mention the conditions that need to be met, and why it may not > be met. Having one entity for this will only scare the user and force > extra work on those who will have it available. I am guessing that > some of these conditions are always true (natively or artificially by > PHP) so that's something else to consider.
Yep, I agree with you! There is an entity ¬e.no-windows; that serves this purpose. More might be created for other OS, but having just a message saying, your system may or may not have this functions doesn't help much! Nuno