where supplementary sections are established, as provided for in Article 17, or where the main section is subdivided into classes, as provided for in Article 16, the rules for the division of the breeding book and the criteria or procedures applied for recording animals in those sections or classifying them in those classes;
i gcás ina bhfuil codanna forlíontacha bunaithe, amhail dá bhforáiltear in Airteagal 17, nó ina bhforoinnfear an phríomhchuid in aicmí, amhail dá bhforáiltear in Airteagal 16, na rialacha chun an pórleabhar a roinnt agus na critéir nó na nósanna a chuirtear i bhfeidhm chun ainmhithe a thaifeadadh sna codanna sin nó iad a aicmiú sna haicmí sin;