31. The computer system of claim 30, wherein said dialog box control system logically associates the plurality of dialog boxes in a hierarchical relationship based on a location of a representative dialog launch display element used to launch each dialog box, and further wherein said plurality of dialog launch modalities comprise: a modal dialog launch modality for which said dialog box control system provides a first degree of display clarity and a first extent of system interactivity beyond said active dialog box; and a semi-modeless dialog launch modality for which said dialog box control system provides a second degree of display clarity approximately the same as said first degree of display clarity and a second extent of system interactivity beyond said active dialog box that is greater than said first extent of system interactivity.
30. A computer system comprising: an operating system responsive to one or more system calls each causing said operating system to process user inputs in a predetermined manner; a graphical user interface configured to generate one or more dialog box control requests in response to user inputs provided on said graphical user interface; a plurality of dialogs each constructed and arranged to control display of and interactivity with an associated dialog box open on said graphical user interface in response to one or more of said dialog box control requests; and a dialog box control system, operatively interposed between said graphical user interface and said operating system, responsive to a selected one of a plurality of dialog launch modalities, said dialog box control system constructed and arranged to close open dialog boxes not having a predetermined relationship with said selected dialog box and to control providing said one or more operating system calls and to control providing said dialog box control requests generated by said graphical user interface to said plurality of dialogs to provide an associated degree of display clarity and an extent of system interactivity associated with said selected dialog box modality.