any sequence of model or modelSequence elements which is to be processed as a single set of actions the condition under which this model applies given as an XPath Predicate Expression whether to obey any rendition attribute which is present the intended output method the output is intended for presentation in a web format the output is intended for presentation in a print format the output is intended for presentation in a plain text format

All of the child elements of a modelSequence element are to be processed together, for example in sequence, rather than independently of one another.