01 - 51

01 Motorways 
02 Primary Roads 
03 Main Roads 
04 Secondary Roads 
05 Other Roads 
06 Railways 
07 Ferries 
08 Hovercraft 
09 Airports 
10 AA Coastline 
11 Waterways 
12 Spot heights 
13 Contours 
14 Cities (1) stamps 
15 Cities (2) stamps 
16 Towns (1) stamps 
17 Towns (2) stamps 
18 Towns (3) stamps 
19 Towns (4) stamps 
20 Towns (5) stamps 
21 Country Outlines 
22 Spot height text 
23 Airport text 
24 Cities (1) text 
25 Cities (2) text 
26 Towns (1) text 
27 Towns (2) text 
28 Towns (3) text 
29 Towns (4) text 
30 Towns (5) text 
31 Towns (6) text 
32 Contours 5000tf 
33 Contours 3000tf 
34 Contours 1000tf 
35 Political Areas 
36 Veleter Vex. text 
37 National boundary 
38 International boundary 
39 Graticule 
40 Control line 
41 Motorway text 
42 Primary road text 
43 Main road text 
44 Secondary road text 
45 Other Road Text 
46 Lake text 
47 River text 
48 Canal text 
49 River shore 
50 Unknown 
51 Boundary (national)