Opened Gear List
Pressing a main category (Head, Torso, legs) will open all sub categories. Private / Public is to show or hide your items from other players (trading)
Opening a Backpack
Backpacks on the ground can be opened seperately by dragging them outside of the "ground" area. Each backpack has a different layout.
Gear on the Ground
What it looks like when gear is on the ground in proximity of the player.