Portal is a video game made by [[valve_software|Valve]] as a part of the Orange Box. It involves a character named [[Chell]] making her way through the Aperture Science Enrichment Center with the [[aperture_science_handheld_portal_device|Aperture Science Handheld Portal Device]] while being tested and taunted by a computer named [[GLaDOS]] (Genetic Lifeform and Disk Operating System).