RHT by type
Poetic text with exegetical marginalia (papyrus roll /codex)
Poetic text with frame scholia (Medieval codices)
Poetic text with paraphrasis and à recueil scholia (Medieval codex)
Poetic text with interspersed metrical scholia (Medieval codex)
Epigrams with titles and notes (Medieval codex)
Prose text introducing and quoting poetic text (Medieval codex)