I need to produce an lengthy itemization of the form:
1.AAAA
	1.1 aaaa
	1.2 bbbb
2.BBBB
	2.1 cccc

I can get:
1.AAAA
	1 aaaa
	2 bbbb
2.BBBB
	1 cccc
easily enough, but how can I get the main division number to repeat  
in the subitem numeration?

Alan