Read Transform Matrix of block Instance in FILE3DM - Rhino Developer - McNeel Forum
Attribute from Block Instance - Rhino - McNeel Forum
Rhino Block Instances & V-Ray Proxies - YouTube
Hypar Twitterissä: "And speaking of interoperability, in addition to bringing your layouts into Revit, you can now export them to Rhino as well, with the new Hypar plug-in for Rhino! Models come
assign the nested block's layer in Rhino - yuchen chen