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4:3 ·
In a ground-to-air emergency code used by pilots who have managed an emergency landing, or have crashed but survived,  signifies that ammunition and firearms are needed. Thus there is a semiotic relationship to the military use of  .
This sign is also found on tape recorders and video appliances, but turned 90 degrees, to  and  . The meanings are fast forward winding and fast reverse winding. In this use is synonymous with  .
The similar  is used by indian peoples in southwest USA. It is called track of the thunderbird and denotes bright prospects.
Compare with synonymous  in Group 42.
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