From Eternity Wiki
10:Door_Close(tag, speed, light_tag)
Closes a door.
- tag: tag of sectors to close. 0 means the sector behind the trigger linedef.
- speed: movement speed. 16 is the common door speed, 64 is the turbo speed.
- light_tag: sector to apply ambient light to, Boom-style.
It will always make the closing sound, even for the fully closed sectors.