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I use plain old periods myself and have rarely seen anything else
other than occasional use of underscores or hyphens.
** That's all that Microsoft Word 6.0, for example, has to suggest
for the tables of contents it generates automatically.
I use the periods, but I add a space before and after them.
__________________________________________________________________________
Mark L. Levinson mark -at- dcl-see -dot- co -dot- il
SEE Technologies, Box 544, fax +972-9-543917
46105 Herzlia, Israel voice +972-9-584684, ext. 230