The article proposes that the interstitial as an analytical category advances transdisciplinary developments in contemporary choreographic practice. The techniques and conventions of passing, marking, and parsing are described as concomitant agencies that act as notational scores connected to the informatic procedure of writing as dancing. A case study is provided as an example of how gesture, executable code, computational poetics, script, and syntax can endure beyond the performance event as choreographic score and artifact. The novel application of plain text computing, with all its constraints, not ordinarily connected to terpsichorean practices, paradoxically exhibits a nascent realm in which dance-making futures may endure.