Identifies foreground package and activity class. You can copy those too!
Usefull when you need to know
package/class of aplication for making a new flow.
When is activity you choosed in foreground, open notification bar and press "Start" on Automate notification
You can copy the package and class once you'll click again on notification button "Copy" Then You can choose between copying package/activity....
Update: Added more info Such as Display name, Size (B, MB) and more.