Select Object: Left Mouse Button
Rotate Object: Right Mouse Button, Right/Left Arrow Keys, UI Arrows
Send Object To Inventory: Middle Mouse Button, Delete Key, UI Button
Drag Object: Hold Left Mouse Button & Drag, W,A,S,D Keys
Hide UI: Tab Key
Item to inventory: Select item with left mouse click, the Delete Key/Middle mouse click
Scroll Inventory: Up & Down Keys, Mouse Wheel, UI Buttons