Also written 洞戸, 道幸, 道古, 堂庫、or 道籠. A storage space for utensils used for the tea ceremony. The earliest type was probably a portable, free-standing, box-like object placed on the floor. Later it was hung on the wall, and finally, it became a built-in cupboard. This type of cupboard was particularly convenient for an elderly tea master's simple tea ceremony because he could handle the implements while seated. A dōko is usually made by cutting out the wall on the kitchen side of the host's mat. The size of a dōko varies, from 50-90 cm wide, 45-60 cm high, with a depth of 30-45 cm. Generally, a small opaque sliding door of the unframed type, *taikobari fusuma 太鼓張襖, is provided on the side of tea ceremony room. The bottom of the dōko has a slatted floor, sunokonagashi 簀子流し, and includes a shelf. A man named Dōkō 道幸 first made a cupboard for the storage of tea ceremony implements. Dōkō's cupboard is 72 cm high by 66 cm wide with cedar doors set on double tracks. It also has one board shelf and a nail to hang a ladle for water. Metsugo 滅後 in *Nanbōroku 南方録 is a volume that contains exceedingly detailed writing on this subject.