How it works “messages from parent ”& “messages from component” ？

Help
#1

I’ve searched the [Docs] ， but I still can’t understand this.
Can someone record a video program for that?
Thanks!
Principle Version:5.8

3 Likes
#2

maybe this might help?
https://principleformac.com/docs.html#message-events

#3

The same things. The documentation does not help. I’m trying to play with that. I tried different options for different cases but nothing works. It looks like it’s buggy.