The story script is defined as an XML document that records story characters and their scenic interactions. We define two kinds of leaf nodes, namely <Location /> and <Character />, which are under the root node <Story />. The <Location /> node contains two necessary attributes: Name and Sessions. A Session refers to a scenic group that contains one or more Characters. A Character contains one necessary attributes: Name. The <Span /> nodes represent the Sessions, which are characterized by a three-tuple: Start (Time), End (Time), and Session (Id). The sample script （Redhat） is as follows:
<?xml version="1.0" encoding="utf-8" ?>
<Story>
<Locations>
<Location Name="Red cap's Home" Sessions="1, 2" />
<Location Name="Forest" Sessions="2"></Location>
<Location Name="Grandmother's Home" Sessions="3"></Location>
</Locations>
<Characters>
<Character Name="Red cap">
<Span Start="1" End="5" Session="1"></Span>
<Span Start="5" End="18" Session="2"></Span>
<Span Start="18" End="22" Session="3"></Span>
</Character>
<Character Name="Mother">
<Span Start="1" End="25" Session="1"></Span>
</Character>
<Character Name="Grandmother">
<Span Start="10" End="15" Session="3"></Span>
</Character>
<Character Name="Wolf">
<Span Start="6" End="11" Session="2"></Span>
<Span Start="11" End="25" Session="3"></Span>
</Character>
</Characters>
</Story>We also provide a simplified JSON format which is compatible with the XML document (see iStoryline.js).