UI Introduction The Controls of Physics Toolbox are made by Tile UI. Each Tile is made by one unique Control. When you first apply a prop from the Physics Toolbox, you will see the icon of the control and name of the control in yellow text. The text in white is the prop name which the control has picked. If there are several props picked by this control, the white text will read “Multiple”.     When you move the cursor over the tool icon, you will see the basic control.     You can drag the edge of the tile to show more tiles. You can then double click on the new tile to choose a new control.         UI Introduction Double click on the blank area on a control to open management bar. Double click again to close it.   Move: Moves the current control to a different tile position.   Toggle Advanced Menu: Opens or closes the advanced menu.   Delete: Discards the current control.   Merge: Merges the current control panel with another control panel. For more information, please refer to How to Merge Panels.