In the computerised world of our age we need to visually represent and commit our ideas to paper without converting them. The interaction between the idea and the mark made by a pencil on paper is a constant driving force behind the work-to-be. During the processes that mutually affect one another the work that later takes a material form manifests in the line and the line drawing. The forming of masses expressed with the line is an organic part of architectural train of thought. As an independent element without significant spatial content the line does not exist. The line has an architectural message. It expresses and makes perceptible space and mass, which are the most important basic elements of architectural thinking.