<subst>

<subst> (substitution) groups one or more deletions with one or more additions when the combination is to be regarded as a single intervention in the text.
組件transcr — 11 Representation of Primary Sources
屬性 att.transcriptional (@hand, @status, @seq) att.editLike (@cert, @resp, @evidence, @source)
屬於 model.pPart.editorial
可包含
core: add corr del orig reg sic unclear
textcrit: app
transcr: damage restore supplied
宣告
element subst
{
   att.global.attributes,
   att.transcriptional.attributes,
   att.editLike.attributes,
   ( ( model.pPart.transcriptional ), model.pPart.transcriptional+ )
}
註
Although a substitution may contain any mixture of additions and deletions; there should be an addition for each deletion bearing the same sequence number. This constraint cannot be modelled in the schema language currently deployed.