Inventory Drawers is a feature that was planned for release in 2013. The feature would allow users to store inventory items for easy navigation. Not much is known about this feature. It was announced to be in progress in October 2012.
How it would have worked
Players would have been able to add items to the drawers, rename the drawers, remove items from the drawers, and purchase additional drawers for YoCash. VIP users would have received more free drawers than non-VIP users.