This element is the default interface for the export parser.
The element will export the value of another node that it is linked to.
Note that the position of nodes being referenced generally does not matter; <export> tags can be placed before the node it is linked to.
parser : 'export'
<!-- Exports: 'Hello, World' -->
<export link='export' />
<node id='export' >Hello, World!</node>
<node =example />
<node id='example' >{ 1 + 1 }</node>