Analysis of information sources in references of the Wikipedia article "Keyboard shortcut" in English language version.
If your app does not perform the task associated with a recommended shortcut, think very carefully before you consider overriding it. Remember that although reassigning an unused shortcut might make sense in your app, your users are likely to know and expect the original, established meaning.
Emacs does not assign meanings to keys directly. Instead, Emacs assigns meanings to named commands, and then gives keys their meanings by binding them to commands.