Westzeedijk:
- Overview picture: "Westzeedijk overview - MD and MF"
- It has 2 schakelinstallaties:
	- Type MD, picture "MD - SV", this is the installation on the left side
	- Type MF, picture "MF - SV", this is the installation on the right side

The pictures need some editting:
- Type MD: currently only L2 is 'on' (red indicator)
	- It was broken, the instructor had to put a magnet close to the red-indicator for it to show. But he intended it to be 'red' thus 'on', such that it follows the "eenduidig verklikkerbeeld"
	- From picture "MD - closeup":
		- The closest to the mechanic is the 'bottom' SV, which is red, thus L1
		- The middle is yellow-taped, thus L2
		- The furthest away is the top one, which is blue tape thus L3
- Type MF: 
	- The middle and bottom one are 'on' (red indicator), the top one is 'white' (thus off)
	- it follows the same logic as for MD. Perhaps student should also be able to click on the red-cables below it, to see which color of the tapes it is