YELLOW TREE (2001) by Hans Dehlinger is a print of a coded vector file that was originally written for and executed on a pen plotter. A great number of polygonal lines consisting of straight line segments originate in a very small square area at the bottom of the page, a symbol for the "root area" of the tree.
The blue background color is a reference to a wide blue sky in summer. The yellow reminds us of the time of harvest from the soil of the earth.