1. A computerized method comprising: receiving multiple documents from at least one machine-readable media, the multiple documents having a hierarchical relationship relative to each other, the multiple documents including a first document and a second document, the hierarchical relationship between the first document and the second document being such that the second document is the child of the first document in the hierarchy and is associated with a specific subsection of the first document and the second document includes a replacement or addition for the specific subsection of the first document and an entirety of the second document is included in the first document as an enhancement to the first document; and simultaneously displaying the multiple documents on a display screen such that the multiple documents are distinct and are arranged according to the hierarchical relationship, wherein the position at which the second document is displayed is entirely within the first document and that the position of the second document within the first document is based on the specific subsection of the first document that the second document is associated with.