What is this small square icon in my Word document?

[ravl13]

Hello,



I've found that some formatting issues I've been running into have been resulting from the lack of an inconspicuous black square formatting symbol that appears when I enable hidden formatting to be displayed:

http://i.imgur.com/u4KjqtQ.png

Those little black squares that i've circled, what ARE those? When they're there, everything works fine, but when those black squares aren't there, everything's all weird with template formatting.

How can I add those black squares?