Acts 1981, 67th Leg., p. 1876, ch. 453, Sec. 1, eff. Sept. 1, 1981. Amended by Acts 1985, 69th Leg., ch. 479, Sec. 219, eff. Sept. 1, 1985; Acts 1985, 69th Leg., ch. 729, Sec. 27, eff. Sept. 1, 1985. Renumbered from Vernon's Ann.Civ.St. Title 110B, Sec. 35.006 and amended by Acts 1989, 71st Leg., ch. 179, Sec. 1, eff. Sept. 1, 1989. Amended by Acts 1989, 71st Leg., ch. 580, Sec. 3, eff. Sept. 1, 1989; Acts 1989, 71st Leg., ch. 889, Sec. 4, eff. Sept. 1, 1989; Acts 1991, 72nd Leg., 1st C.S., ch. 17, Sec. 1.26, eff. Nov. 12, 1991; Acts 1993, 73rd Leg., ch. 812, Sec. 13, eff. Sept. 1, 1993; Acts 1995, 74th Leg., ch. 555, Sec. 34, eff. Sept. 1, 1995. Amended by: Acts 2007, 80th Leg., R.S., Ch. 1230 , Sec. 7, eff. September 1, 2007.