Keyboard shortcuts are "hotkeys" defined for the physical or virtual keyboard to quickly access functionalities which otherwise would require multiple strokes/taps to be accessed.

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How to create a hardware shortcuts in Android 4.3?

I have Samsung Galaxy S4 GT-i9500 running the latest firmware with Android 4.3. I want to create "hardware shortcuts". For example, if I hold volume up and home at the same time, then it'll open an ...
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How can I emulate ctrl-Z (undo) in Android 4.1.2 on a Galaxy Note 3?

Based on this question and this question and this issue, it sounds like Android basically doesn't have undo/redo functionality. (I guess? Correct me if I've misunderstood or if the situation has ...