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the parcel. `contents<-` attempts to assign to the expression, which will only work if the expression is appropriate, e.g. a refset.\n\n\n```r\ncontents(parcel)\n\ncontents(parcel) <- value\n```\n\n## Arguments\n\n- `parcel`: an object of class 'parcel'\n- `value`: a value to assign\n\n## Returns\n\nThe result of evaluating the expression stored in the parcel. 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