The OP posed a question, we all put forward a opinion of what the reason may be. You infer you have the deffinative answer.... fine... what silly things have been said?
I don't think J333EVO is being rude. Afterall, We have all asked at one point how to turn the headlights on... its not like we all went away and read up on how to turn them on instead of just asking someone who knew how lol in this case.... asking why.
I'm glad I've now got knowledge about Citroen DS's and a history behind the Heel & Toe... so thanks all