Abstract: The present invention comprises a software system having a user-friendly navigational interface utilizing an hierarchical display of business documents based upon a dominant-subordinate relationship between the documents. In one embodiment, the documents are related through the use of keys, which define a relationship between the dominant and the subordinate documents. In conjunction with the selection of a specific document, the invention displays information related to that document. The information to be displayed can be custom defined by the user. In one embodiment, each user can define a unique set of data to be displayed. The invention further provides a means by which the underlying data can be easily edited from the hierarchical display. The present invention also allows the creation of expressions that will alert the user to predetermined conditions.