A milking unit is proposed, comprising at least one milk hose, having a first end section and a second end section, and a milk collecting component, which is connected to the first end section of the milk hose. The functional coating and the protective coating define a coating stack. A method is directed to producing a binary-level conditional branch reversal within a binary program on a computer architecture that supports a predicated execution. Provision is made for the removably detachable mounting of light-obstructing shades, each shade occupying less than one-third of the total area of the visor. This makes applications based on all-pairs shortest-paths practical for continental-sized road networks.