XLDyn is available to HyperWorks customers through the Altair Partner Alliance.
XLDyn uses patented technology so your model works as well as it looks, this is particularly true for SysML models. You can, for example, link values in a SysML constraint block to a worksheet, do a few calculations and then use the worksheet as a middle person to update the model.
Video topics include:
All videos are short (under 2 minutes) so you can get the basics of XLDyn very quickly. Videos do not contain sound but captions walk you through all you need to know.