G1 manual filleting with FilletSrf (+ Xnurbs)

Since I regularly get questions about filleting and because I often see people struggling with fillets in Rhino, I’ve recorded the process of filleting a surface indent where some of the surfaces get ‘consumed’ completely by the fillets. Mainly using:
FilletSrf, BlendCrv, Split, Trim and Xnurbs for two corners