Hi, my name isXXXXX have an answer for you regarding compatibility mode, let me know when you are ready to start?
Compatibility mode is a good thing, and you can find it in Word 2007, 2010 and 2013. You will see compatibility mode whenever you open a document that was not created with the same version of Word that you are currently using. For example, a document saved in Word 97 but open it in Word 2010 - since not all the same features are available in those versions, it means that not all features will be available. Word turns on compatibility mode to ensure the new features or later versions aren't accidentally added to documents created with earlier versions of Word.
Because of this feature, when you view it or print it in it's corresponding version, it will always work correctly. Now, let's say you created documents years ago in an older version of Word and now you have upgraded. Since you will not be using that older version anymore, it is safe to 'upgrade' the document. The advantage of upgrading your documents is reduced file size and of course, use of the new features. To convert, click File, Info, Convert. You can always downgrade using File, Save As and then choose an older file format.
One last tip. Click File, Information, and then under Check for Issues, click Check Compatibility. In Select versions to show list, if only one version of Word is selected, then Word is currently in compatibility mode for that particular version.
Here is a link to the Microsoft site that shows what features are available in which versions of Word in a quick and easy comparison table type of layout:http://office2010.microsoft.com/en-us/word-help/compatibility-changes-between-versions-HA010370116.aspx