Opening a Word Comparison Window
When opening a new Word Comparison window, the Microsoft Word document comparison is given a name of the form MS Word compare X, where X is an integer indicating that Microsoft Word document comparison's position in the sequence of Microsoft Word document comparisons opened in the current DiffDog session. This name appears in a tab at the bottom of the window.
Note that the Compare Microsoft Word Files command opens the Microsoft Word Comparison window with two new and empty Word documents; it does not open any particular Microsoft Word document within the window. The two documents to be compared must be opened subsequently in the panes of the comparison window, one in each pane.
To open an empty Word Comparison window:
•Select the menu option File | Compare Microsoft Word Files or click the Compare Microsoft Word files 
button in the Standard toolbar.