What is the function of command tab?

The Command Tab function, commonly found on macOS systems, allows users to quickly switch between open applications. By holding down the Command key and repeatedly pressing the Tab key, users can cycle through their active applications. This feature enhances multitasking efficiency by providing a fast way to access different programs without using the mouse. Additionally, users can also hold down the Command key and press 'Q' to quit an application or 'H' to hide it while using this function.