title: Confirm order in open cart
body: <p>How the confirm order in opencart works.
  I am facing problem. When I click on confirm order, the page is not getting redirected. 
  In the file <code>\upload\catalog\view\theme\default\template\checkout\confirm.tpl</code> and on line number 53 there is a variable <code>$payment</code>. I want to know where this variable is defined.</p>