When selecting items on an online shopping site, the cart displays them in a simple vertical list based on the order of addition. The first item appears at the top, with each subsequent item listed below it, accompanied by details like quantity and price.
This list persists across sessions. Adding or removing items updates the total seamlessly, and proceeding to checkout follows the same path without alteration.
Upon next viewing the cart, items appear organized under section headings such as 'Fresh Produce' or 'Cleaning Supplies.' Products of similar types now cluster within these sections.
The prior list ordered by addition sequence is no longer present. The cart now presents contents structured by product categories.
The cart continues to function identically, yet its arrangement has become one defined by groupings rather than sequence, without any interrupting signal.