Tree
This tab provides settings for filters that have nested options (e.g. Categories and Tags).
Parent Option
Sets the parent option, whose children nodes will be loaded in the filter.
This setting is useful, especially when you have long lists of options, which are semantically diverse (e.g. semantically diverse categories).
Tree Toggle State
If the tree will be shown as expanded or collapsed.
When an option is selected, that part of the tree is expanded no matter the value in this setting.
Parent Nodes as Links
The parent options in a tree can be links (i.e., return results) or just toggle/expand their sub-tree.
Show sub-node contents on parent node selection
Returns the contents (and the filters) of the sub-nodes (e.g., sub-categories) when a parent node is selected.
Show sub-node contents on parent node selection = No
Show sub-node contents on parent node selection = Yes