NOTE: Some Web Browsers such as the Netscape Navigator and Microsoft Internet Explorer enable the end user to modify how ordered lists are displayed

Here is an example:

1. Here is a major topic
1. And here, how about a subtopic
2. follow up stuff
2. Second major topic
1. Second subtopic
2. Follow up for number 2
1. Want to go deeper?
2. Here ya go!
3. Third major topic
1. Third subtopic
2. Follow up for number 3