| marker(noun, information, mark, sign, influence) |
| signpost(noun, information, mark, sign, influence) |
| sign(noun, information, mark, influence, indication) |
| beacon(noun, information, influence, indication) |
| lodestar(information, suggestion, indication, inspiration, signal) |
| pointer(noun, information, influence, indication) |
| signal(noun, information, influence, inspiration) |
| Bible(noun, information, influence, signal) |
| bellwether(noun, information, influence, signal) |
| book(information, influence, suggestion, inspiration, signal) |
| catalog(noun, information, influence, signal) |
| chapter and verse(noun, expression, idiom, information, influence) |
| clue(noun, information, influence, signal) |
| compendium(noun, information, influence, signal) |
| directory(noun, information, influence, signal) |
| enchiridion(noun, information, influence, signal) |
| guidebook(noun, information, influence, signal) |
| guiding light(noun, expression, information, influence) |
| handbook(noun, information, influence, signal) |
| hot lead(noun, expression, information, influence) |