The type of the node selection.
If the type is set to multiple the user will be able to select more then one node in the tree.
Examples
Single Selection
<div id="tree"></div>
<script>
var tree = $('#tree').tree({
dataSource: '/Locations/Get',
selectionType: 'single'
});
</script>
Multiple Selection
<div id="tree"></div>
<script>
$('#tree').tree({
dataSource: '/Locations/Get',
selectionType: 'multiple'
});
</script>