That doesn't work in Safari. Ctrl has it's own special functions. Copy link, open link in new tab, etc.
I can assign it to the SHIFT key instead of the CTRL key, will that work in Safari ?
If I go to Array Operations, stop the array, and reboot or powerdown, does the powerdown plugin get invoked or not? I had assumed that it does. If it does, then shouldn't the buttons do the same? Is there some good reason to bypass it I'm not aware of?
You are right, when the powerdown plugin is installed it will actually replace the standard powerdown function, which in turn is called by the menu's shutdown or reboot selection.
Using the CTRL key will call the powerdown script directly, but essentially is the same action.