| This type of closet cube was in use in a summer festival. |
 | Look at the inside. |
 | The cube is vacant. |
 | Now it it occupied. |
 | To enter or not to enter? |
 | Occupied, view inside. |
 | Vacant, view inside. |
 | Unfortunately, it is possible to exit from the cube even if the latch is left in this position, and it shows part green, part red. |