Nature Related Computerkunst Figure 2. Hans Dehlinger: Figures 3. Silksprint from pen-plotter-drawing, 50 x 70 cm. (© 1990, H. Dehlinger. Used with permission) `Cyber Flowers' are examples of bio-related plot- ted art works. Dehlinger (2004) and Verostko belong to the group of `Algorists' mentioned above. Using the biological terms `genotype' and `phenotypes' for this kind of mathematically defined art they make clear that their way of creation may serve as a representation of a natu- ral process, the `genotype' standing for the `invis- ible,' a hidden universe of possible creations, and different `phenotypes' for it's visible outputs. In later years, Gerd Struwe developed `Auto- matic Drawers' ­ self developed programs that continuously draw scenes and persons appearing and fading, communicating and departing - par- allel or time shifted - an ongoing computerized reflexion of daily life. The output of mathematical art generation in this case is animated graphics to be watched on the monitor screen or as beamed projection.