Microsoft Word has several useful command line switches that can be used to start Word. To open a Word document using the switches in Windows 7, type winword.exe /x. Here “/x” is the switch.
To modify how Microsoft Office Word starts on a one-time basis, you can add switches to the Microsoft Windows Run command (Start menu).
The following is the list of switches for Microsoft Word sourced from KB210565.
If you plan to use a modified startup method frequently, you can create a shortcut on the Windows desktop, using these switches.