The document discusses the use of lines and traces in spatial planning and urban design. It defines soft lines as joining different perspectives and horizons through synesthesia, while hard or trace lines contain the weight and materiality of places. Traces reflect light and shadows and call to viewers like prints. The document also examines how lines are used in artistic drawings, architectural plans, and spatial experiences to analyze space and represent the necessary exposure of humans in urbanism.

1. THE PLAN: A SPONTANEOUS AND SUSTAINABLE MARK « La ligne, ancrage du spontané et marqueur de l'immémorial dans l'espace » Une observation des territoires sacrés et profanes de l'espace urbain depuis la nécessité de l'exposition de l'homme By Paul Girard Une communication de Paul Girard

2. DEFINITIONS. - Soft line and hard line in the artistic drawing (ligne douce et ligne dure dans le dessin artistique) - line and trace in the architectural planning (ligne et trait dans la projection architecturale) - line and trace in the spatial experience (ligne et tracé dans l'expérience spatiale) -The map is experience of the spatial crossing, account of this crossing, and plan.

3. A: the design as a spatial analysis (le dessin comme analyse spatiale) B: the exposition, a necessity of urbanism (l'exposition, une nécessité de l'urbanisme. Personal drawings of a village from two photographs. Monterigioni, Tuscany, Italy .

4. The trace is strong line. It contains the weight of things, as the material of our encounter with the place. It participates in a concave and convex surface. The trace reflects the shadow and the light from the place. It calls us like the print does.

5. The soft line joins different horizons, screens, points of view, by synesthesia. It joins interior and exterior. In the drawing made by the architect, it stands in the dynamic joint between the view by plans and the elevations.

6. VALTZ WITH BACHIR , a film by Ari Folman . A page from the comics streap. The dramatic aspect of the city appears through a collective spectacle. The city acquires a tragic beauty in the cinematographic device.