RelaxNG compact schema for the codicology model (non-TEI version) implemented by codicology.xml.

codicology.rnc

Codex = element codex { Gathering+ }

Gathering = element gathering {
    (attribute id { xsd:ID }? &
    Ruling?),
    Singleton*, Bifolium?, Singleton*
    }
    
Singleton = element singleton {
    attribute id { xsd:ID }?,
    Folio
    }

Bifolium = element bifolium {
    (attribute id { xsd:ID }? &
    Ruling?), 
    Folio, (Singleton* & Bifolium*), Folio
    }
    
Folio = element folio { Page, Page }

Page = element page { 
    (attribute id { xsd:ID } & 
    attribute hf { "H" | "F" } & 
    attribute ruling { "ruled" | "non-ruled" | "unruled" }? &
    attribute textFollows { xsd:IDREF }?), 
    text
    }

Ruling = attribute ruling { "beforeFolding" | "afterFolding" }

start = Codex