Stupid HTML

Today I wanted to do a really simple thing. I had a terms and conditions list which was points subdivided into sub points. It seemed a pretty simple thing to do in html, unfortunatly nesting ordered lists meant the numbering restarted so instead of 1, 2, 2.1 2.2, 2.3, 3 I had 1, 2, 1,2,3, 3. I found this article however while it provided a solutions it wasn't one I could use as its not supported in internet explorer. I ended up having lots of unordered lists with no bullet style and typing in the numbers myself :s rubbish! How come word processors have been able to do bullet lists at different levels forever but nobody thought it might be useful in html?