Text selection

[JoeLE11]

If I have text in word and I highlight it with my mouse, it will not be
deleted when i hit backspace, nor will it disappear when I type another
letter, as it should. Is there a setting or a button I messed with
inadvertantly?

 

[Suzanne S. Barnhill]

On the Edit tab of Tools | Options, check the box for "Typing replaces
selection."

 

[Julia Chromicz]

Did you try:

Tools
Options
Edit
Typing replaces selection <= check this box

-Julia