Key facts: Tex. Est. Code § 205.001 governs will contests in Texas; contestants must be interested persons with legal standing; specific grounds required include lack of testamentary capacity, undue influence, fraud, forgery, or improper execution; burden of proof rests with contestant by preponderance of evidence; 30-day waiting period applies after probate commencement; $75,000 eligibility threshold may apply to certain contested matters.