The WW.Math library is now available as a separate product, available in two editions: standard and professional. See http://www.woutware.com/WW.Math/editions.html for more details. Thanks go out to Eran Kampf, because WW.Math has its roots in his Sharp3D library (see http://www.codeplex.com/Sharp3D). Note that as soon as the February CTP of Sandcastle is out, I'll update the documentation (there were some issues with the December CTP). Wout