In these charts the directions of the major axes of elongated objects are depicted in three areas, labelled I to III. In addition, the directions of objects with tails or bright rims present in round or elongated objects are indicated. The locations of these areas are shown in the lower-left panel on a map composed from Spitzer observations at 4.5 μm, This background is used in all areas, and in area III (lower-right) the optical image is superimposed as well. The symbols used are explained in the bottom-left corner. North is up and east to the left in these images, and CN numbers are marked according to Table A.1.