Graham could use Replace to replace all single space characters following a period with two spaces, or vice versa, but it's not a silver bullet. Fortunately, you can use Word's Replace feature to do so quickly and consistently. The alert is helpful, but you still have to fix the spacing yourself. Click OK twice to return to your document.Use the Space Between Sentences dropdown to choose a setting ( Figure B).In the resulting dialog, thumb down to the Punctuation Conventions section.Click the Settings button to the right of Grammar & Refinements.Thumb down to the When correcting spelling and grammar in Word section.To access this setting, do the following: Figure A Word alerts you to the spacing error. (To see the space and paragraph characters, click Show/Hide in the Paragraph group on the Home tab.) This setting is a visual alert, not an automated fix. As you can see, when the number of spaces doesn't match the setting, Word displays a red dotted line below the spaces. The settings don't undo or redo anything instead, the two settings display a grammar error when you don't type the expected number, as shown in Figure A. SEE: Windows spotlight: 30 tips and tricks for power users (Tech Pro Research)