Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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The process of applying a series of fine creases or bender marks to the hinges of leaves of loose-leaf books, the purpose of which is to enable the leaves to be turned over easily and to lie flat. The lines of the creasing prevent undue bulking at the area of crimping. A sufficient series of creases closely spaced imparts a rolling effect ensuring a flexibility that is difficult to obtain by any other means. Cf: SCORE . (264 , 316 )

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