Today is the fourth baston anyo of Modern Arnis, Anyo Apat.
This is by +Datu Hartman at the WMAA as part of "The Modern Arnis Minute" series.
It was difficult to learn (for me, but I'm not always the brightest bulb on the tree) but it is my favorite of the baston anyos. As with most of the Modern Arnis anyos, you can see their roots in blade (vs. blunt).
One note - Datu Tim shows two versions here - the "original" version (which is very, very similar to the way we do it at our school), and his own WMAA version. Different players and different organizations may do the anyos slightly differently from one another, and this is normal, as there is no single right, standard way.
If you can't see the video, click here.