...
| Code | Activity |
|---|---|
| B | Bicycling |
| C | Conservation, environmental issues |
| F | First aid, outdoor medicine |
| G | General interest (not focused on outdoors) |
| H | Hiking, trail running |
| M | Mountaineering, climbing (including rescue) |
| N | Naturalist, geology, earth sciences |
| O | Outdoor activities, general |
| P | Photography |
| S | Snowsports |
| T | Travel (usual and unusual modes) |
| U | Caving (i.e. underground) |
| V | Volunteering, non-profits, etc |
| W | Water sports , boating(paddling) |
| X | Early exploration |
| Y | Sailing (i.e. yachting) |
Part 3: Focus
| Code | Classification |
|---|---|
| B | Individual biography or narrative |
| F | Fiction, humor, poetry |
| G | Guidebooks, maps |
| H | History, science and culture |
| P | Pictorial |
| T | Technique (how-to, including navigation, etc) |
...