2. The operating system of claim 1, 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 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.
3. The operating system of claim 2, wherein said dialog launch modalities further comprise: a modeless dialog launch modality for which said dialog box control system provides a third degree of display clarity substantially less than said first degree of display clarity and said second degree of display clarity, and a third extent of system interactivity beyond said active dialog box that is greater than said first extent of system interactivity and said second extent of system interactivity.