I have been noticing these two panels in my office elevator for many days. One panel is on the left side and one panel is on the right side. Here they are
I have a problem with the design of these panels. Why? The right panel has the door closing button as the left-most button in the bottom row, but the left panel has the door opening button as the left-most button. This, as per me, is a design problem. When you are inside the elevator and someone wants to enter the door while the door is closing, you want to ensure that the doors open. But, this design makes you think. If you are standing on the left side, you need to remember to press the button on the inside, while you need to remember to press the button on the outer side if standing on the right side.