Expand the root node to view the full list of classification schemes.
The number in parentheses after each entry indicates how many concepts (ClassificationNode objects) the parent contains.
Expand the node for the classification scheme you want to use.
Expand concept nodes beneath the classification scheme until you find the leaf node by which you want to search. A leaf node is a node with no concepts beneath it.
Select the leaf node.
(Optional) Restrict the search by choosing an object type or specifying a name or description string.
Click the Search button.