| 1S | Side one The location is side one. |
| 2S | Side two The location is side two. |
| AA | On surface To indicate that the entity being specified is on the surface. |
| AB | Off surface To indicate that the entity being specified is off the surface. |
| AC | Soluble Specifies that the surface/layer/position being described is the soluble portion. |
| AD | Opposite corners The surface or layer of the product being described is the opposite corners. |
| AE | Corner Diagonals The surface or layer of the product being described are the corner diagonals. |
| AF | Port The left-hand side (looking forward) of a ship, boat or aircraft. |
| AG | Starboard The right-hand side (looking forward) of a ship, boat or aircraft. |
| AH | Tooth facial surface Surface of a tooth directed toward the face and opposite the lingual surface. |
| AI | Tooth incisal surface Surface of the tooth relating to the cutting edge of the anterior teeth, incisors or canines. |
| AJ | Tooth distal surface Surface of the tooth toward the back of the dental arch, or away from the midline. |
| AK | Tooth buccal surface Surface of the tooth pertaining to or around the cheek. |
| AL | Tooth occlusal surface Surface of the tooth pertaining to the masticating surfaces of the posterior teeth. |
| AM | Tooth lingual surface Surface of the tooth pertaining to or around the tongue. |
| AN | Tooth mesial surface Surface of the tooth toward the midline of the dental arch. |
| BC | Back of cab The location is at the back of the cab. |
| BS | Both sides The location is both sides. |
| BT | Bottom The location is on the bottom. |
| DF | Dual fuel tank positions The location is in the dual fuel tank positions. |
| FR | Front The location is in the front. |
| IN | Inside The location is in the inside. |
| LE | Left The location is on the left. |
| OA | Overall The location is overall. |
| OS | One side The location is on one side. |
| OT | Outside The location is on the outside. |
| RI | Right The location is on the right. |
| RR | Rear The location is in the rear. |
| ST | Spare tyre position The location is the spare tyre position. |
| TB | Tank bottom The location is at the tank bottom. |
| TP | Top The location is on the top. |
| TS | Two sides The location is on two sides. |
| UC | Under cab The location is under the cab. |