add_subwindow(new PrefsRenderFarmNewNode(pwindow, this, x+xmargin2, y));
add_subwindow(new PrefsRenderFarmSortNodes(pwindow, this, x, y+=ys30));
add_subwindow(new PrefsRenderFarmDelNode(pwindow, this, x+xmargin2, y));
add_subwindow(new PrefsRenderFarmNewNode(pwindow, this, x+xmargin2, y));
add_subwindow(new PrefsRenderFarmSortNodes(pwindow, this, x, y+=ys30));
add_subwindow(new PrefsRenderFarmDelNode(pwindow, this, x+xmargin2, y));