Final answer:
The semi-colon is not used to bring up a window, but it is commonly used as a command separator in computing.
Step-by-step explanation:
The semi-colon does not bring up a window on its own. However, it is commonly used as a command separator in various contexts in computing. For example, in the Command Prompt window, the semi-colon is used to separate multiple commands on a single line. Similarly, in the Run window, the semi-colon can be used to separate multiple paths or commands that need to be executed.