These are the rhino files that perform the explicit history example shown below:

crtli_exhis_ex1.3dm
crtli_exhis_ex1.wrm

First open the rhino file, and then open the explicit history definition from the ExplicitHistory plug-in interface. Edit the surfaces included the rhino file, and you’ll see how Rhino can actually be parametric. Also note the angle parameter in the “Rot” node and the linear relationship described in the “F(x)” node.