| 摘要 |
An easily opened envelope includes a cutting filament extending across at least one interior edge of the envelope. A tear line that terminates adjacent one end of the cutting filament is torn to expose and thereby permit the user to grasp the thus-exposed end of the cutting element. The edge of the envelope along which the cutting filament extends is severed by pulling the cutting filament along the edge, thereby to provide access to the interior of the envelope.
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