Complex sentence: The word slideshow does not appear in the Webster's New Twentieth Century Unabridged Dictionary (1973 edition), though slideshow will pass a spell check in Microsoft Word in both Office 2000 and Office XP editions.
Split into simpler sentences: The word slideshow does not appear in the Webster's New Twentieth Century Unabridged Dictionary (1973 edition). Although, slideshow will pass a spell check in Microsoft Word in both Office 2000 and Office XP editions.