569 N.W.2d 243 DIANA ELLEN SMITH-HELSTROM, FORMERLY KNOWN AS DIANA ELLEN YONKER, APPELLANT, v. DAVID LOREN YONKER, APPELLEE. No. S-96-923.Supreme Court of Nebraska. Filed October 10, 1997. 1. Courts: Appeal and Error. When a cause is remanded with specific directions, the court to which the mandate is directed has no power to do anything but […]