An opposed chamber application is to be treated as a court application for purposes of prosecution and the rules relating to court applications apply to it. Rule 236(4)(b) of the High Court Rules, 1971, which provides for dismissal for want of prosecution, applies to opposed chamber applications. Where an opposed chamber application has been filed, the filing of heads of argument and setting down the matter for hearing is mandatory, not discretionary. An applicant who fails to prosecute an opposed chamber application by filing heads of argument and setting the matter down within the required time is liable to have the application dismissed for want of prosecution.