- Theceremonyhasbeencompleted,thegifthasbeenunsealed,andthelessoniscoming.Awrittenpromise,sealedorunsealed,maybedeliveredbythepromisorinescrow,conditionallytothepromisee,orunconditionally.ThepresentinventionrelatestoakindofeasilyunsealingbagwhichUSESbi...
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