DPF warning card supplied with car

The other day I found a card in the top glove box of my Elegance and it was a warning card about the DPF.

it says:

"Information about diesel particle filter

This vehicle is fitted with a diesel particle filter. This technology minimizes the emission of soot particles. If for once the automatic cleaning of the filter is not possible (e.g. because of permanent short distances), It is Indicated by means of the diesel particle filter warning light

Diesel particle filter warning light

If the warning light comes on In the Instrument cluster, the automatic cleaning of the particle filter can be assisted by your particular style of driving. After the successful cleaning, the warning light goes out."

The vehicle must not be operated with RME fuel (biodiesel)!

Now that's interesting.