Thanks. This has been an annoyance for 7 years. The Microsoft knowledge base article is inaccurate, but you pointed me in the right direction.
I searched 'Commands'and clicked 'New...' which opened a templates folder. The 'normal' document appears as 'Blank Document'. Opening the 'Blank Document', I reset the Tab parameter, and saved the document by overwriting the original. Hardly straightforward, but successful.
I owe you big time. If there is anything I can do to reciprocate, do not hesitate to contact me - my knowledge base includes medicine, law, piano tuning, Jeep repairs, and thrashing Windows XP...
Rick
Richard M. Brown, MD/JD ('Rick')