Added by Acts 1987, 70th Leg., 2nd C.S., ch. 52, art. 2, Sec. 1, eff. Sept. 1, 1987. Amended by Acts 1989, 71st Leg., ch. 612, Sec. 1, eff. Sept. 1, 1989; Acts 1991, 72nd Leg., ch. 176, Sec. 1, eff. Sept. 1, 1991; Acts 1995, 74th Leg., ch. 526, Sec. 10, eff. Sept. 1, 1995; Acts 1995, 74th Leg., ch. 698, Sec. 7, eff. Aug. 28, 1995; Acts 1997, 75th Leg., ch. 1206, Sec. 23, eff. Sept. 1, 1997; Acts 2001, 77th Leg., ch. 573, Sec. 10, eff. Sept. 1, 2001; Acts 2001, 77th Leg., ch. 1158, Sec. 28, eff. June 15, 2001; Acts 2001, 77th Leg., ch. 1398, Sec. 1, eff. Sept. 1, 2001. Redesignated from Government Code Sec. 447.010 and reenacted and amended by Acts 2003, 78th Leg., ch. 1310, Sec. 29, eff. June 20, 2003.