How to: Use Additional IntelliSense: Correct Text While Typing.
Solution:
When an automatic correction change is undone, Word notes the reversal and does not repeat the change in the future.
NOTE: Automatic correction checks for spelling errors and typographical errors automatically in Word 7.0, and replaces typed characters with a special symbol (such as, typing EQUAL+EQUAL+LESS THAN automatically becomes a right arrow). When an automatic correction change is undone, Word notes the reversal and does not repeat the change in the future.
