Could you please give some advice on how to type those? I don't trust the idea of copying them from a Chrome window of the Forum post into my KBM macro.
Once I get the right characters, I intend to add them to the Text Expansion Macros set.
The best is to tell Keyboard Maestro to give it to you.
The macro below will display TriggerValue in the window (set it to the hotkey you want to use and use the hotkey to trigger it). You can then copy it from the display window. (The IF...Then action is not necessary. It is to demonstrate how to use it in a macro).
Yes, martin's idea of simply setting the trigger value for the macro and then displaying %TriggerValue% in a window, copying that to have a string for matching, seems very straightforward.