Ontological function of sketch

The paper puts an emphasis on the importance of sketch as one of the fine art's forms. Sketch (mere outline) possessing strength, precision and attraction shows at the same time a specific ontological power that seems to be in some kind of play of finished and unfinished lines and contours. Sketch displays an ambition to present a substantial form omitting everything less important. For all that, omitted and unfinished lines present magic visual support to finished contours. Starting from the thesis that design can be treated as crucial point in common to all fine arts, author of this text claims that it is possible to go a step forward and by process which can be named figural or ontological reduction, reduce figural and ontological residuum from design to mere outline (sketch). Aesthetic principle of unfinished defining sketch as such, has been recognized as powerful figureforming tool with significant ontological function