It modifies the drawing in order to make a cleaner translation, and to allow the user to preview, as closely as is practical, what the drawing will actually look like in Autocad. To my knowledge, there is nothing in this macro that is specific to a particular layer or class system. These features are all stripped out of the file by the DXF export and there is no way to preserve them. Because MiniCad uses a square pen to draw all objects, diagonal lines of a given weight appear heavier than orthogonal lines of the same weight. This command will reduce the weight of selected diagonal lines according to their angle, forcing them to plot at their intended weight.
Orthogonal lines are unaffected.
Objects other than lines are ignored. Polygons, arcs, and polylines cannot be corrected unless they are converted to lines. Therefore, they have to be placed either at the scale of the drawing or at the size they ought to appear on paper. For example, a north arrow should be the same size on paper regardless of the scale of the drawing. The 3number stamp2 tool in MiniCad 6 is a band-aid for this problem.