What is a line?

Petra Kempf's publication - You are the City. Subtitled - "Observation, organization, and transformation of urban settings". The publication is 22 sheets of clear acetate onto which different conceptual layers and frameworks of a city are printed.
The project is extremely conceptual, promoting the user to start thinking about their city spatially, physically making fresh connections through layering.
It links back to the TOAST exhibition I looked at earlier, layering translucent sheets of perspex, bringing together abstract formations of type.