Numbering Headings in Microsoft Word: It Doesn't Have to Drive You Crazy
http://www.stc.org/intercom/PDFs/2003/200302_14-16.pdf

Block, Barbara M.
Intercom
2003

Abstract:

If you’re a longtime user of Microsoft Word, you’ve noticed that Word’s functionality has changed in countless little ways over the years. You’ll probably agree that most of the changes have been beneficial and have made our jobs easier. Unfortunately, some changes have been for the worse.