The author of the tutorial is J.L. Alcover Lillo, Madrid, Spain. This example shows how to create the effect of partial image processing in AKVIS NatureArt using the History Brush .
Define a water level with the Move tool .
Select the History Brush and adjust its parameters in a pop-up window that appears after right clicking in the image.
Using the brush process the desired area. This tool helps to reduce the effect and return the image to its initial state. Here is the result: