Design of Keybinding, Key Shortcut, Input System

In this section, we study the design, efficiency, of keybinding, keyboard shortcuts, and input system. (for example, key shortcuts for copy, cut, paste, open, close, moving cursor by word, Photoshop keys, and keybinding of vim, emacs, and home row mod system, and input systems such as entering math formulas.)

If you are a programer, majority of your keystroke is actually keyboard shortcuts, not typing letters. [see Emacs Command Frequency Statistics]

Keybinding and Input-System