Xcode Parameter Linking (NOT SwiftUI)

Just revisiting Xcode 13.4 in some time for a MacOS Automator Action and literally cannot find, Google or Developer support, how parameters (a tab in Automator Info for the target) can be linked to UI objects in a xib (not SwiftUI) or how to access those parameters in Objective C code.

I cannot even find Xcode documentation on this topic in Developer at https://developer.apple.com/documentation/xcode and my search for "Xcode parameters" does not help.

So, could someone please direct me to where this is covered in documentation?

Xcode Parameter Linking (NOT SwiftUI)
 
 
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