For Word documents edited in the Word2010 window, if you want them to be editable in the Word2003 window, you can save the Word2010 document as a Word2003 document, as described in the following procedure:
Step 1th, open the Word2010 document window and click the file → save As button, as shown in Figure 1.
Figure 1 Click the Save As Button step 2nd, in the Open Save As dialog box, click the Save as Type Drop-down triangle button and select the word97-2003 document option in the list of file types. Then select the save location and enter a filename, and then click the Save button, as shown in Figure 2.
Figure 2 Word2010 the Save As dialog box