Use 1 -> 1.1 -> 1.1.1... ordered list format.

[aabbccddeeffggj]

Hi, everyone. I would like my ordered list to work like this:

1 text0
1.1 text1
1.2 text2
1.2.1 text3
1.2.2 text4
1.2.3 text5
2 text6
2.1 text7
...

Anyway to achieve this behavior?

Thanks.