Projection classification tool

the projection classification tool allows you to use the 2d image to classify points in 3d drawing process select a class, the 2d image will become a bit bigger prompt the image using the 2d prompt tool (see 2d machine assisted tool docid\ b1putylvp306oo0rsvotq ) once you're happy with the polygon outline, press enter to apply the classification to the points within the highlighted area