A Hack how to Troubleshoot a 3-Way Switch, Did you know the Written ON/OFF Tip? Thoughts?

If you get a service call and the light's not working, first thing you have to determine if it's a three-way switch. Do you know how you would determine if that's a three-way switch? By seeing if the switch turns on or off at another location. >> No, there is no on or off on a multi-gang switch, on a three-way switch. If this was a single-pole switch, it would say on and off. >> Oh, okay, that means Yeah, yeah, yeah, yeah. >> the first thing you look at is the switch. Now, the next step is which is the point that's hot or the light? That's what the problem is, right? Is this the point of the load or is this the hot coming in, right? So, that's where a lot of the confusion is. Sometimes you read that and go, "Oh, there's no power." But you're reading the load. You're You're reading the light fixture. So, a little bit of detective work to figure that So, the hot wire is going to go on to that black screw here. They call it common, right? And again, it is this very common three-way wiring? It's It's very common to get confused, right? Now, let's take a look at this switch. This is like the Wago Wago Wego Wego. I really like it. Can you tell me