AutoWear Custom State sensors and App Opened events

I just got a Moto 360 Sport, and am trying to learn AutoWear. How can I trigger a Tasker profile using AutoWear’s custom state <sensor-x>, <acceleration>, and <orientation> variables? For example, how could I use <sensor-x> to trigger a Tasker context if I dropped my watch, or wanted to count jumping jacks? Related to that, how can I find out what the gravity sensor (#9) reported when the watch was dropped, or I did a jumping jack? And how could I just use the value of a sensor variable (e.g., air pressure) in a task, without using it to trigger a profile? I read curlyel’s question about pressure, and the related answer, and understand I would need to use the sensor constant, but that’s about it. For example, I don’t understand how to use the sensor constant - would I type <sensor-6>? - or how to access it if it's not part of a custom state trigger.

Also, what are all the "App opened" events (Hal, Jarvis, Function, Listening, Obeying, …)? I see several joapps’ icons on my watch that seem related to these icons – e.g., Function, Listening, Obeying - but am not sure what they do or how to use them. I have never seen Hal, Jarvis, or some of the others. And what if I want to trigger a context if an app closes, instead of opens?

I would really appreciate any help I can get. I’m lost. Thank you.