Hi dlgross,
Option section instructions means, do you need to increase the font size of "Click here to Insert" in the optional section in the preview form. If that is the problem the solution is extract the InfoPath form in to a folder by File --> Extract Form Files and close the form.
Go to that folder and open the view.xsl file and go to "Click here to insert" div section and in that go to style option
previously it would be like this
style
="WIDTH: 651px"
Now change like this
style="WIDTH: 651px; font-size: 10px;"
change the font size as you wish and you will get the result.
Hope this will help you.