Every individual unknowingly leaves a mark in the world where he (or she) has lived, bequeathing significant traces of him or herself. Using signs which are learnt and codified, we replicate to infinity the signs which have been impregnated with thoughts and emotions, thereby ensuring that someone will be there to decipher them. Ellipses, parabolas, hyperbolas, straight lines and concave curves, a succession of lines for kilometres… and for pages. In wise hands, these selfsame instruments become signs of distinction, of belonging or of enduring personality.