For example, Martin van Bruinessen notes similarity between adat and historical practice among Muslims in Egypt as described by Edward Lane.
Natural materials - timber, bamboo, thatch and fibre - make up rumah adat.
In 1999, Gentec received the Markham Board of Trade's Business Excellence Award, presented to Joel Seigel and Margaret Adat by then-Mayor of Markham, Don Cousens.
In 1938 Hazairin obtained a post at a court in Padang Sidempuan, North Sumatra, where he stayed until the Japanese invaded the Indies in 1942; during the same period he served to enforce adat law throughout South Tapanuli.
In 1991 Alesis introduced ADAT, an eight-track digital audio recording system that used S-VHS cassettes.
In 1612, at the request of Raja Abdullah to pen the Malay Annals to ensure " ... all the adat, the rules and the ceremonies of the Malay Sultans and Rajas to be heard by our descendants and is made known all utterances so that it may benefit them".