Selects nodes from the mindmap using one of the following markers:
Attributes:
- @marker = required:= 'icon', 'parent-text', 'text'
- when @marker = 'icon' the @icon attributes indicates which of the icons to match
- when @marker = 'parent-icon' the @icon attributes indicates which of the icons to match
- when @marker = 'parent-text' the @text attribute selects the nodes that have the text as a parent.
- when @marker = 'text' the @text attribute selects the nodes which have the text
Examples:
<Section @marker='icon' icon='idea'>
...
</Section>
<Section @marker='parent-text' icon='People'>
...
</Section>