A "Left-Click" refers to the action of pressing the left button on a computer mouse. This action is commonly used to select items, open files, or execute commands on a computer. It is one of the primary ways users interact with graphical user interfaces, such as those found in operating systems like Windows or macOS. In addition to selecting items, a left-click can also be used to drag and drop files or highlight text. Many software applications, including web browsers and word processors, rely on left-click actions for navigation and editing tasks. Understanding how to use left-click effectively is essential for efficient computer use.