The "Shopping Cart" screen is used to view what currently is in your "Shopping Cart".
 
It displays items in the cart and their prices as well as a total price.
 
Only items that are checked will be displayed unless you are using one of the available "Preview" options.
 
There are 2 options that allow you to preview the cart.  Previewing shows what the prices would be if everything on your list was in the cart.  This provides a quick way to see what your list would cost, item by item.
 
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MENU Options
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"Clear Cart" - clears items that are currently in your shopping cart.
 
"Normal" - changes to normal display mode from preview mode.
 
"Preview" - displays the current prices for all items on your list, checked or not.  These are the prices set for each individual item.  Any items missing prices will have the price grayed out.
 
"Preview Store" - provides a pop-up list of stores to select from.  When one is selected a  preview of the current shopping list is displayed using that stores prices.  All items are included, checked or not checked.
 
"Hide/Show Spin" - hides or displays spinners at the bottom of the screen.