nf. suburbs, suburb, outskirts, periphery

nf. periphery, perimeter, circumference; outer border, outer edge

n. compasses; suburb, outskirts; circuit; girth, periphery

(n.) = periphery.
Ex: The coding positions around the periphery of the card are punched in order to represent the numbers of the documents indexed under a specific index term.
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* quedarse en la periferia = at the margins.