From box formation: Lead dancer in each file of two rolls outward to join adjacent hands with trailer to do a Single Hinge. From the newly formed box the new lead persons roll outward to join adjacent hands with the trailer to do another single hinge. Finishes in box formation.
NOTE: This can be done from regular column formation (Reset The Column) or from parallel waves (Reset The Wave).
This definition is from The Handbook of Modern Square Dancing by Jay King.
It is provided here for informational and educational purposes only.