What I don't understand is the box with a slash through it located counter clockwise from the larger solid bar.
I'm sure it is less warm than the large box, but does it have a special meaning?
I don't get why they used a different marking for that specific one.
I did actually look for a manual online that might explain the settings, but I failed to find one that specifically mentioned this.
Make/model: white rodgers 37c73u-725