title: What is '0x0' address in Solidity (Ethereum)?
body: <p>I'm studying solidity programming, and I have a question on this line of code:</p>
  
  <p><code>Transfer(0x0,msg.sender,tokens);</code></p>
  
  <p>I don't understand what <code>0x0</code> means. Is it the new token address or is it the new smart contract's address?</p>