Why does Word delete text when I type?

[Randy Stead]

I find that when I go back to a previous paragraph and
try to edit or add text that when I type, for instance to
insert a word, that as I type in new text, the old text
is "eaten up" one letter at a time.

 

[Suzanne S. Barnhill]

Press Insert or double-click OVR on the status bar.

 

[Randy Stead]

Thank you, Suzanne. I no longer have text disappearing
on me.