Order 21 rules 137 and 138 of the High Court Rules relate to action procedure and provide alternatives to pleading to merits, specifically for striking out paragraphs of pleadings in summons proceedings. Applications to strike out notices of opposition in application proceedings must be brought under Order 32, which governs application procedure. An application for leave to appeal against an interlocutory order under section 43(2)(d) of the High Court Act and Order 34 rule 263 must establish special circumstances, failing which it is defective. Where a legal practitioner erroneously assumed agency without instructions and subsequently withdrew, and the alleged client confirms it never provided instructions, this raises a question of fact, not law, and cannot constitute a viable ground of appeal. Interlocutory and procedural orders that are not definitive of parties' rights should not be permitted to proceed on appeal where the appeal will not advance resolution of the main dispute.