This is more a standards/expectation question. Under 'actions' when dealing with apps/RM, the button related stuff are radio buttons. For the life of me, I didn't realize you could just select the item again to remove the selection.
Is this standard practice? I can't recall any time I've been able to deselect a radio button this way.
This fooled me a long time ago in ST. Because I had never ever seen this action for radio buttons, it never occurred to me to just hit the button to turn it off. After days of trying to figure out how to turn off a selection, some community member told me - big "duh" moment for me.
The reason why radio buttons are called that is because a radio can only tune in to one station at a time.
Nowadays with our progressive thinking, apparently radio buttons can be checkboxes if they want to. 
I understand the purpose of a radio button. It's just I've never seen it able to be deselected. That's not an expected a behavior (for me, hence asking the question if this just totally escaped me).
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