An unordered list is a list in which the order of list items is not significant.
Items are usually marked with a bullet or other similar symbol.
Example
<p>Once we had large numbers of source files and directories to deal with, we ran into the following kinds of error situations that were difficult to resolve:</p> <ul> <li>We had problems finding out the root cause of error messages in the Ant build log.</li> <li>We lost track of which source files had references to other source files.</li> <li>We often didn't know which URLs were linked to in the source files.</li> <li>We wondered which source files were not actually being used.</li> </ul>