Multiple Level Grouping

Hi

I have to produce the following output. Could you please help me to do
in XSL.

eg:
Specification:3030
1234 ABC School
	120 andy p
	100 steve g
2345 London School
	321 ken hock
5469 Maybury School
	632 Charles June

Specification:3031
1234 ABC School
	100 Srini Avula
	300 Mike Atkinson
6789 Goldsworth School
	150 Uma C
	170 George Pound


Much appreciate your help.

Regards
Srini
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