OptionalconditionThis can be used e.g. to indicate a perforation which is torn out or in any other way damaged.
OptionaldepictionIIIF region pointing to a depiction of this feature in the scan.
Horizontal span of the feature on the roll.
ReadonlyidA unique identifier for this object.
ReadonlytypeThe type discriminator for this object.
Vertical span of the feature on the roll.
A chain of holes punched along the roll, which the tracker bar reads as it passes. The perforator cuts a held note or function as a row of punches with bridges of paper left between them, so most perforations are chains; one without a bridge is a chain of a single hole. The holes are the chain's parts and are not stated one by one. A punched chain is a human-made feature: CRM counts "the information encoding features on mechanical or digital carriers" among the features purposely created by human activity.
See
reo:HoleChain