They are versatile because they can be used for all sorts of tasks. They can also do many of the same tasks in different ways. They are diligent because they will do a task thoroughly until it is finished.
They work at a constant speed to do the task. Unlike a human, they will not slow down or get bored or start making mistakes that they were not doing earlier. So once they are programmed correctly to do a task, they will do it diligently.
Alexander Hamilton, George Washington, James Madison, and Benjamin Franklin
The below displays ice-creams with its associated flavours. This we would display using <UL>
• Stick
o Chocobar
o Feast
• Bowl
o Butterscotch
o Blueberry
<UL>
<LI>Stick
<UL>
<LI>Chocobar </LI>
<LI> feast</LI>
</UL>
</LI>
<LI>Bowl
<UL>
<LI> Butterscotch </LI>
<LI> Blueberry </LI>
</UL>
</LI>
</UL>
Here <UL> tag is used to create un ordered list and one another <UL> tag inside <LI> created nested list which is the actual requirement. Like this we can created nested unordered lists and you can nest upto 4 levels and increasing the number of levels further may reduce clarity.
The answer is visual hierarchy :)