Does word 2007 have a cliff notes option?



I have a write up I want to edit, that a friend sent me, but i don't want to delete anything I just want to make comments &/or suggestions. I figured a split vertical page would do the trick but can' figure it out. And of course, making two columns don't work as the text in the other columns shift as text is added to the first column.

thanks for any help that can be provided.