Hi, Amberroad

As far as I know, there's not an option that allows you to directly type text between spaces without moving them. What application are you using in Office 2007 please? If you're using Word, you can try:

(1) Inserting a text box on the line. You'll then need to change the wrapping for the text box to "Tight" and resize the text box to fit that area.

(2) Using comments instead. To add a comment, place your cursor at the end of the line you want it to appear. Select the "Review" tab and click "New Comment" under the "Comments" group. A comment box will open on the side, where you can insert the additions or text you want.

Not sure if this is answers your question...