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Subdividing the Editing Window |
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On systems that do not support multiple windows, it is possible to split the editing window into multiple subwindows. (Window splitting is available on all platforms, but is not used when multiple windows are supported.) Control of window layout, panning, and zooming is all accomplished with commands in the Windows menu.
The initial configuration shows one editing window. If multiple windows are supported, then new windows are created with the New command of the Windows menu. The Split command divides the current window in half, either vertically or horizontally, (On systems that support multiple windows, this is a subcommand that can be found under the Window Partitions command.) When splitting windows, the aspect ratio of the editing window and its contents are used to determine how the window is split.
Once the original is split, only one window is the current window, and its border is highlighted. The current window changes, however, whenever the cursor moves to another window and a command is issued. The Split command can be used repeatedly to subdivide windows into halves, quarters, and so on. Once the initial split has been made, there is no longer a choice between horizontal and vertical splits: Each division follows an alternating sequence to achieve a clean binary tree of windows.
To undo the partitioning of a window, use the Delete subcommand of the Window Partitions command of the Windows menu, which deletes the current partition and merges it with its neighbor. This command can be issued only to a window at the bottom of the subdivision tree. To back out completely from multiple partitions, use the Make 1 Window command, which returns to a single partition.
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