closed 4.2.1.1 2005-05-20T15:06:11.003-06:00 2004-06-12T21:38:54.303-06:00 TSD4.2 Archaeological Markup Language (ArchaeoML), version 0.9, February 2006. Created by David Schloen of the University of Chicago. ScriptUnit document type. A ScriptUnit document represents a particular graphic sign (grapheme), or a combination of signs, or a subcomponent of a sign, within a particular writing system. A script unit can have any number of readings, each of which is given a UUID so it can be referenced from DiscourseUnit documents. nestedVariableIndex nestedValueIndex nestedDocIdIndex nestedLinkIndex