Configuration/Core/client/html/catalog/filter/tree/levels-only

Summary
No more than this number of levels in the category tree should be displayed

client/html/catalog/filter/tree/levels-only =


 * Default:
 * Type: integer - Number of tree levels
 * Since: 2014.03

Description
If the user clicks on a category node, the page reloads and the sub-nodes of the chosen category are rendered as well. Using this configuration option you can enforce that no more than the given number of levels will be displayed at all. The root node uses level 0, the categories below level 1 and so on.

In most cases you can set this value via the administration interface of the shop application. In that case you often can configure the levels individually for each catalog filter.