Very nice! One thing that would make it easier to see how the distribution behaves would be to have a number of common parameter choices as presets for each dis

Very nice! One thing that would make it easier to see how the distribution behaves would be to have a number of common parameter choices as presets for each distribution, like the Wikipedia pages often do. At least, that is what I would find useful when picking a distribution to use for random inputs. It's also what bugs me about every documentation of C++11's <random> header I've found---they're great if you know which distribution you need, but picking one (when you have the freedom to choose) is hard. Of course, that isn't the job of a language reference, and this could be the tool for that.