Both the links under the section "High current output: MOSFET (motor, light, multiple LEDs) " in the "References & Examples" are broken.
In fact a lot of people seem to have problems with MOSFET switching on the forums, especially not knowing that logic-level devices are required and imagining that a 10A rated MOSFET will switch 10A (which it won't!). Is there a MOSFET guide somewhere that I've missed?