1. A computer-system comprising: a page description language document, including at least one packaged file therein, stored in at least one memory device, the page description language document including: at least one packaged file presentation shell including a graphical layout of standardized graphical elements having properties and presentation nodes for presenting representations of the at least one packaged file of the page description language document; metadata associating each of the at least one packaged files with a presentation node of the at least one packaged file presentation shell; at least one presentation overlay including at least one standardized graphical element, which, when applied to the packaged file presentation shell, overrides respective standardized graphical element properties and presentation nodes for presenting representations of the at least one packaged file of the page description language document; and a page description language document application stored in the at least one memory device and executable on at least one processor to present a view of at least a portion of the page description language document according to the metadata and the at least one packaged file presentation shell as modified by the at least one presentation overlay, wherein the at least one presentation overlay modifies only the packaged file presentation shell when the at least the portion of the page description language document is presented.