Which shortcut is used to open an existing file?

The shortcut that is commonly used to open an existing file is CTRL+O. This command is a standard keyboard shortcut across many software applications, including word processors, graphic design tools, and other types of programs that handle files. When you press CTRL+O, it typically prompts the user with a dialog box to navigate to and select the file they want to open, facilitating quick access to previously saved work.

Other shortcuts serve different functions: CTRL+S is used for saving the current document or file, ensuring that any changes made since the last save are recorded. CTRL+N is utilized for creating a new document or file, providing a fresh workspace. CTRL+F is often associated with the "find" function, allowing users to search for specific text within the open document. Understanding these shortcuts enhances productivity by making navigation and task execution more efficient.