Browser display, li element

• empty li element (start tag, end tag only): does not display in browser
• its children, flow content: the display depends strictly on the nested element
• its content, type text: displays in browser
• the content of the li elements preceded by:
  → bullets: if li elements nested inside ul
  → numbers or a different marker if type attribute (»video) is used: if li elements nested inside ol
  

Note:
The bullets of the items of an ul (unordered list) can be replaced with a customized image, through CSS, like this:

ul{list-style-image:url(images/check.png)}

Instead of bullets, the image check.png will display in front of each item of the list.