In MS Word 2007, which shortcut key is used to switch to Outline view?

In MS Word 2007, the shortcut key ALT+CTRL+O is specifically used to switch to Outline view. This view is crucial for organizing and structuring documents by displaying headings and subheadings. Other combinations like ALT+CTRL+P are for Print Layout view, and ALT+SHIFT+O/P are not standard for Outline view.