How do you get Borderlands on the PC to go into a windowed mode?

To run Borderlands in windowed mode on PC, first, launch the game and access the main menu. Navigate to the "Options" section, then select "Graphics." Look for the "Fullscreen" option, and change it to "Windowed" or "Borderless Windowed." Save your changes, and the game should now run in a windowed format.