Heidi,

It is the end of cell marker. See:

http://word.mvps.org/faqs/formatting/NonPrintChars.htm
--
Greg Maxey/Word MVP
See:
http://gregmaxey.mvps.org/word_tips.htm
For some helpful tips using Word.

Heidi wrote:
When you create a table in word, what are those little squares that
are in each of the cells and stay there while you are typing at the
end of the word. They do not print, but what are they for?