To compare two versions of a document to find out what has changed, use the legal blackline option.
On the Review tab, in the Compare group, click Compare, and then click Compare.
• To compare documents side-by-side, open both of the documents that you want to view. On the View tab, in the Window group, click View Side by Side.
• To merge comments and changes from several documents into one document, on the Review tab, in the Compare group, click Compare, and then click Combine.
• To see two parts of a document simultaneously, on the View tab, in the Window group, click Split. • To return to the location of the last edit, press SHIFT+F5.