Question about default route

Question

Hi all: I learn this reference from MSDN.The pic below is a network topology which i am going to use.

And quotation from the reference:

Web Client:

The Web client is connected to the 10.0.13.0/24 subnet and uses the IPv4 address of
10.0.13.110/24, the default gateway at 10.0.13.1, and the DNS server at 10.0.47.91. 
The Web client has the following routes:

*10.0.13.0/24 (directly attached network route)
*0.0.0.0/0 with the next-hop address of 10.0.13.1 (default route)

Note

To simplify the discussion for each component of the example IPv4 intranet, this  
example lists only the most relevant routes.

So,what does ip address 0.0.0.0/0 mean,the default route? What is that on earth?

Answer 1

Sounds like a question for serverfault.com

Answer 2

After checking the wikipedia reference,i feel a lot better now.