These are key combinations pressed on an external keyboard connected to an iPad or iPhone, providing quick access to various functions and commands within the operating system and specific applications. For instance, pressing Command-Spacebar might bring up Spotlight Search, while Command-C copies selected text.
The utility of these key combinations stems from their ability to accelerate workflow and increase efficiency. Rather than relying on touch-based gestures, users can perform actions more rapidly using dedicated key presses. This functionality has evolved to support greater accessibility and productivity for users across diverse skill levels and professional environments, especially those who prefer or require physical keyboards for input.