text: "3. Paragraph 30 of this article shall not apply if the person has had an opportunity to leave the requesting State and has not done so within [30/45] days of final discharge in respect of the offence for which that person was extradited or if the person has voluntarily returned to the territory of the requesting State after leaving it. "ARTICLE 15 "Transit "1. Where a person is to be extradited to a Party from a third State through the territory of the other Party, the Party to which the person is to be extradited shall request the other Party to permit the transit of that person through its territory. This does not apply where air transport is used and no landing in the territory of the other Party is scheduled. 66/ Some countries may wish to add, as a third case, explicit consent of the person. 67/ Some countries may not wish to assume that obligation and may wish to include other grounds in determining whether or not to grant consent. "2. Upon receipt of such a request, which shall contain relevant information, the requested State shall deal with this request pursuant to procedures provided by its own law. The requested State shall grant the request expeditiously unless its essential interests would be prejudiced thereby. 68/ "3. The State of transit shall ensure that legal provisions exist enabling the person to be held in custody during transit. "4. In the event of an unscheduled landing, the Party to be requested to permit transit may, at the request of the escorting officer, hold the person in custody for [48] hours, pending receipt of the transit request to be made in accordance with paragraph 1 of this article. "ARTICLE 16 "If a Party receives requests for extradition for the same person from 
analysis: The text appears to be related to international cooperation and law enforcement, specifically in the context of extradition and transit of individuals between countries. It outlines procedures and guidelines for requesting and granting permission for transit, as well as ensuring the person's custody during transit. The language used is formal and legalistic, suggesting that it is a formal agreement or treaty between countries.