The mod_caddy module if installed will display some information about the current cart contents.
Here the cart is empty and here the cart contains items:
Clicking the "Show Cart" button will take you directly to the cart and allows the customer to checkout and pay. No cinfiguration is needed with the SimpleCaddy module. Simply publish it on the appropriate pages and that's it.
Note: the module needs SimpleCaddy component to be installed. The module is not mandatory for the correct functioning of the SimpleCaddy Cart mechanism.