How to: Hide or display wavy red underline marks made by Spell Checker.
Solution:
Select 'Options...' from the 'Tools' menu and click the 'Spelling' tab. Select or clear the 'Hide Spelling Errors in Current Document' check box.
NOTE: Automatic Spell Checker is enabled by default.
1) Select the 'Tools' menu and select 'Options...'. (The 'Options' dialog box appears.)
2) Click the 'Spelling' tab.
3) Do one of the following:
a) To hide marks, select the 'Hide Spelling Errors in Current Document' check box.
b) To show marks, clear the 'Hide Spelling Errors in Current Document' check box.
4) Click 'OK'.