To add to what the others have said, see “Word does not capitalize the first
letter of a sentence†at
http://support.microsoft.com/kb/291538. Apparently
there was a demand to be able to type numbered lists in which the list items
were not capitalized, and the fix was (inadvertently, one hopes) made more
general than intended. The standard answer is that "There are two Shift keys
on every keyboard," but this is not much consolation when you have become
spoiled by Word's previous behavior.
--
Suzanne S. Barnhill
Microsoft MVP (Word)
Words into Type
Fairhope, Alabama USA
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