From lines in which two dancers face one way and two face another: Those who face the same direction in the same line Trade with each other. Finishes in formations similar to those at the start of the move.
COMMENT: This was the forerunner of Trade The Wave which continues to be used. Lines Trade has fallen into disuse in most areas.
Holman Hudspeth 1965
This definition is from The Handbook of Modern Square Dancing by Jay King.
It is provided here for informational and educational purposes only.