Texas Estates Code - EST § 401.001. Expression of Testator's Intent in Will

(a) Any person capable of making a will may provide in the person's will that no other action shall be had in the probate court in relation to the settlement of the person's estate than the probating and recording of the will and the return of any required inventory, appraisement, and list of claims of the person's estate.

(b) Any person capable of making a will may provide in the person's will that no independent administration of his or her estate may be allowed.  In such case the person's estate, if administered, shall be administered and settled under the direction of the probate court as other estates are required to be settled and not as an independent administration.