Cord
During the Consecration of a Church, a Cord will be placed around the Altar Table.
You may find this process laid out in text from the Great Book of Needs.
Here is a diagram showing the order of placement for the cord:
Sources
Russian Orthodox Church. The Great Book of Needs : Expanded and Supplemented. 4 vols. Vol. II, South Canaan, Pa.: St. Tikhon's Seminary Press, 1998.