paragraph 351 in volume 3, chapter 25, Termination of Proceedings
In proceedings introduced by application, including incidental proceedings introduced by application, the applicant may at any time inform the Court in writing that it is not going on with the proceedings. That brings Article 89 of the Rules into play.
Concerning the circumstances in which the respondent will be regarded as having taken a step in the proceedings, so that the discontinuance will come within the scope of paragraph 2, in the French Nationals in Egypt case, the appointment of an agent…