Players interact with the world, items, and structures in Stationeers with an active hand system.
Your left and right hands are represented in the bottom middle of the screen.
WASD movement
Left Click interacts with the world using the current hand or tool in the current hand (ex: you can't interact with buttons while holding an item)
Right Click starts placement mode when holding a structure (ex: Iron Frames or Autolathe)
Mouse Wheel
With an open inventory - changes active slot
When placing a structure - changes the mode for an item in placement mode (use this with Cables to change their shape)
When using some consoles or computers - scrolls the active menu
E swaps current active hand
R opens the item in the current hand, or goes to its options
F swaps between held items and items in your inventory on the side (accessed through the number keys)
Q drops the currently held item in the active hand, holding Q will cause you to throw the item
1-5 will open menus for worn items similar to pressing R, holding 1-5 will cause it to swap with the item in the current hand, or simply go in the current hand - don't do this with the helmet or suit in a vacuum
You can swap the Tool Belt and the Mining Belt by holding a belt in your hand and then holding 5
Delete, End, Insert, Home, Page Up, Page Down rotate item in placement mode
G grab - not the same as drag, which is triggered by clicking on a portable item's handle with an empty hand
I quick open the helmet - don't do this in a vacuum
O turn held item on or off
J turn jack pack on or off - make sure you turn it off when not using it, since it will continuously burn propulsion
