The following article details how to set the default file type when saving in Word. Just a few simple initial steps to apply to your entire document.
In this article, the instructions on Word 2013, with Word 2010 and 2007 are similar.
Step 1: On the card File -> Options .
Step 2: Select the Save item .
Select the default file type when saving in Word. For example, here the version of Word 2013 you want to save the file as Word 2003 by default, click Word 97-2003 Document (* .doc) .
Finally, click OK to complete the default setup process when saving text.
Good luck!