1. A system for implementing a window frame having a first viewable area for displaying the contents of any one of a plurality of windows and a second viewable area for displaying indicia of each such window, the system comprising: (a) a window display mechanism that, in response to a first user interaction with the indicia of a first window of the plurality of windows, displays the contents of that first window in the first viewable area; and (b) a window frame split mechanism that, in response to a second user interaction with the indicia of a second window of the plurality of windows, splits the window frame into: a first window subframe having a third viewable area for displaying the contents of the second window and a fourth viewable area for displaying the indicia of that second window; and (ii) a second window subframe having the first viewable area for displaying the contents of any one of the plurality of windows other than the second window and the second viewable area for displaying indicia of each such window.