This guide includes forms and instructions for a letter and affidavit to request that the court register an outofstate custody order in Texas. Order at Texas Bar Books.The mission of the Family Law Section is to promote the highest degree of professionalism, education, fellowship, and excellence in the practice of family law. These forms are for use in district court. Some Texas counties conduct family matters in county court. EFile Texas Self Help - Free website that helps you fill out and then electronically file common forms for court. Executive Summary. 3. Agreed Divorce Forms SET B. (Texas Divorce, With Children, Opposite-Sex Spouses). The updated OCA forms have added to the online subscription product of the Texas Family Law Practice Manual. The practice of the law deals with forms, documents, procedures (local, State, and federal) and details, many of which are foreign to new attorneys.