The authors of the book created a kind of reference book for those who want to embody their ideas on paper "quickly, simply and clearly" - even if they wanted to be sure that he could not draw. Gregor and Nesrin reassure: to give the idea a visible appearance, it is enough to be able to draw a line. Straight or wavy. And then absolutely anyone can easily make a sketch, which, after refinement, will become a high-quality sketch.