What does RETS stand for?

What does RETS mean?

RETS	Remote Target System Governmental » Military
RETS	Real Estate Title Services, Inc. Business » Firms
RETS	Radioactive Effluent Technical Specification Governmental » Environmental
RETS	Renewable Energy Tracking System Governmental » Environmental
RETS	Renagade End Time Soldier Miscellaneous » Science Fiction
RETS	Real Estate Transaction Standards Community » Housing
RETS	Reconfiguration Electrical Test Stand Governmental » NASA
RETS	Reconfigurable Electrical Test Stand Governmental » NASA