Where citation by publication is authorized by these rules, the citation shall contain the requisites prescribed by Rules 15 and 99, in so far as they are not inconsistent herewith, provided that no copy of the plaintiff's petition shall accompany this citation, and the citation shall be styled "The State of Texas" and shall be directed to the defendant or defendants by name, if their names are known, or to the defendant or defendants as designated in the petition, if unknown, or such other classification as may be fixed by any statute or by these rules. Where there are two or more defendants or classes of defendants to be served by publication, the citation may be directed to all of them by name and classification, so that service may be completed by publication of the one citation for the required number of times. The citation shall contain the names of the parties, a brief statement of the nature of the suit (which need not contain the details and particulars of the claim) a description of any property involved and of the interest of the named or unknown defendant or defendants, and, where the suit involves land, the requisites of Rule 115. If issued from the district or county court, the citation shall command such parties to appear and answer at or before 10 o'clock a.m. of the first Monday after the expiration of 42 days from the date of issuance thereof, specifying the day of the week, the day of the month, and the time of day the defendant is required to answer. If issued from the justice of the peace court, such citation shall command such parties to appear and answer on or before the first day of the first term of court which convenes after the expiration of 42 days from the date of issue thereof, specifying the day of the week, and the day of the month, that such term will meet.