You can quickly add bullets or numbers to existing lines of text, or you can automatically create bulleted and numbered lists as you type. If you're creating bulleted lists for web pages, you can use any graphical image or picture as a bullet.
Bulleted list
You can create a bulleted list for presenting a list of unordered items — that is, items that don't need to be numbered:
Custom bulleted list
You can also create graphics and use them as bullets, rather than using the standard default bullets (circles or squares).
Numbered list
To display a sequential list of items, create a numbered list. You can choose from letters, numbers, or Roman numerals:
Definition list
When you want to present a list of terms and definitions, add a definition list to your page. Terms are usually displayed flush left, with indented definitions. The exact formatting of the list depends on the Web browser being used.
Outline or multilevel
list
You can create lists that have multiple nested levels and paragraphs, and specify different list styles for each level. For example, an outline:
Paragraph
The list above uses different numbering styles at each level. If a heading has only one item below it, you can list the item without numbers (note the way "Paragraph" is displayed above).
Collapsible lists
The following is an example of list is an example of a multilevel outline list, with each level using a different style. This list is also collapsible: