Gmsh Tutorial Multiple Hex-Mesh Extrusions (using a FreeCAD Geometry)

This Tutorial about Gmsh shows, how to hex-mesh a FreeCAD geometry with multiple mesh extrusions.
gmsh.info
C. Geuzaine and J.-F. Remacle. Gmsh: a three-dimensional finite element mesh generator with built-in pre- and post-processing facilities. International Journal for Numerical Methods in Engineering 79(11), pp. 1309-1331, 2009