Interface ProductionEvent

The company that produced the roll copy (e.g. "M. Welte & Söhne"). An object assumption, so that a company read off a box label or adopted from a letter can say where it comes from.

The date of production, if known.

The paper the roll copy was cut on. An object assumption, so that what the paper is taken to be can say how that was found and serve as a premise, e.g. of a dating.

The perforator the copy was punched on, with the drive and the setting its perforations show.

The features the copy came from its punching with: the note and expression perforations, and now and then a mark the perforator left. A reading of a scan finds every chain of holes on the paper at once and states it here, and a feature an editor reads as the work of a later hand belongs in the act that made it, whichever kind of feature it is.

The paper speed the copy was cut for, as the speed at the beginning of the roll: a tempo marking states it so, and the take-up spool accelerates from there. A performance of a version the copy bears witness to starts at it (paperSpeedOf). A copy cut from the same master for another speed comes out longer or shorter than the roll it is aligned with by the ratio of the speeds. The alignment measures that ratio far more closely than a label states a speed, so the speed is held against what the alignments give (alignmentProblems) rather than used to find it.

The reproducing system the copy was cut for. Left out, it is the roll's own; a Licensee re-cut of a T-100 roll names the Licensee here. A system the type vocabulary knows carries the IRI of its concept as id.