Disc-binding is a variation of notebook binding that allow pages to be added, removed, and replaced easily. Additionally pages can be transferred between notebooks of different functions and sizes.
A page perforated for a disc-bound binding system contains a row of teeth along the side edge of the page that grip onto the outside raised perimeter of individual discs. Pages can be added or removed at any time by peeling the perforations away from each disc.
As a result of the open nature of the binding mechanism, a number of resources for do-it-yourself planning and productivity management have adopted the system.
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