ISO 15924, Codes for the representation of names of scripts, defines two sets of codes for a number of writing systems (scripts). Each script is given both a four-letter code and a numeric one. Script is defined as "set of graphic characters used for the written form of one or more languages".

Where possible the codes are derived from ISO 639-2 where the name of a script and the name of a language using the script are identical (example: Gujarātī ISO 639 guj, ISO 15924 Gujr). Preference is given to the 639-2 Bibliographical codes, which is different from the otherwise often favored use of the Terminological codes.

4-letter ISO 15924 codes are incorporated into the Language Subtag Registry for IETF language tags and so can be used in file formats that make use of such language tags. For example, they can be used in HTML and XML to help Web browsers determine which typeface to use for foreign text. This way one could differentiate, for example, between Serbian written in the Cyrillic (sr-Cyrl) or Latin (sr-Latn) script, or mark romanized text as such.

Deron Michael Williams ( /ˈdɛrən/ DERR-in; born June 26, 1984), is an American basketball player currently with the Brooklyn Nets of the National Basketball Association (NBA). Williams has also played for the Utah Jazz of the NBA and Beşiktaş of the Turkish Basketball League. Williams was drafted 3rd overall in the 2005 draft by the Utah Jazz, for whom he played before being traded in the middle of his sixth season to the Nets. He is a three-time All-Star and was a gold medal winner at the 2008 Summer Olympics.

Williams played college basketball at the University of Illinois.

In elementary school and middle school, Williams won two state wrestling championships. In 1993, as an eight-year-old, he won the 67 lb. weight class Texas State championship. Four years later in 1997, he won the twelve-year-old 116 lb. weight class championship. Williams attended The Colony High School in The Colony, Texas and averaged 17 points, 9.4 assists, and 2 steals per game as a junior in 2001. That year he led his team, the Cougars, to a 32–2 record and the Class 5A state semifinals against Bryan High. In 2002, as a senior, he averaged 17.6 points, 8.5 assists, 6.1 rebounds, and 2.6 steals per game. His team, the Cougars, went 29–2 that season, losing the 5A Texas State semifinals. Williams was a teammate of Bracey Wright who went on to play for Big Ten rival Indiana University.