what is used by architects and engineers to create diagrams and graphical drawings
Architectural drawing The development of the computer had a major impact on the methods used to design and create technical drawings,[1] making manual drawing almost obsolete, and opening up new possibilities of form using organic shapes and complex geometry. Today the vast majority of drawings are created using CAD software.[2]
Elements of art Lines and curves are marks that span a distance between two points (or the path of a moving point). As an element of visual art, line is the use of various marks, outlines, and implied lines in artwork and design. A line has a width, direction, and length.[1] A line's width is sometimes called its "thickness". Lines are sometimes called "strokes", especially when referring to lines in digital artwork.