Why does the 94 Subaru Impreza with automatic transmission have a manual button on the shifter?

The manual button on the shifter of a 1994 Subaru Impreza with automatic transmission allows the driver to manually control gear selection, providing a more engaging driving experience. This feature enables the driver to shift up or down through the gears manually, which can be beneficial for performance driving or when navigating hilly terrain. It offers greater control over the vehicle's power and acceleration while still retaining the convenience of an automatic transmission.