What is the subject of Order XXXII of the CPC?

Order XXXII concerns "Suits by or against minors and persons of unsound mind", including representation of a minor plaintiff by a next friend and appointment of a guardian for a minor defendant. "Summary procedure for suits upon negotiable instruments" appears in Order XXXVII, and neither "Ordinary procedure specifically for suits upon negotiable instruments" nor "Revenue-court proceedings specifically concerning negotiable instruments" describes Order XXXII.