Inventor Sketch Block Library.
There was a question on the Autodesk Inventor Forum, about a missing command that will add sketchblocks from a predefined block library into a Autodesk Inventor part.
The first part shown in the movie is the library part and is stored in the library folder.
This part contains of three blocks.
The second part shown in the movie is the normal part that contains of no blocks.
To add blocks from the library into the part, you use the command: "Get Block From Library", found in the Tools Ribbon of Inventor.
The same idea exists in the 2d drawing environment already, where you have the possibility to import or place sketched symbols into a drawing from a library drawing.
Maybe this is a good idea to implement in future releases of Inventor.