On macOS, the modifier keys map as follows:
S+ | Shift |
A+ | Option |
C+ | Control |
M+ | Command (Apple) |
On Windows and X11:
S+ | Shift |
A+ | Alt |
C+ | Control |
M+ | Windows key (often called Super on Unix) |
On Windows,
key-up gestures are not reported for all keyboard events.
Multi-touch gestures are only supported on macOS.
File drop gestures are only supported on Windows.