Nope, right-click & release gets the context menu. Right-click, hold and drag is the copy action. 'Right-Drag' is simply one operation - "I didn't tell you to let go!"
I try yo be precise with things like Shift+Alt+Ctrl+(key)... means hold all the mentioned keys (the first three are meta-keys that do nothing until a 'real' key is pressed), while Alt-U-H is press and release each key in the given order (although you can hold them all down as in chording but the order is important lt-H-U being different).
No more confusing as short and long touches on a smartphone.
Acorn
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