Sets the node as the target (indicated with a red circle). Enables you to test whether the selected node is present in the result set of an XPath expression. It also enables you to test whether that node appears once or multiple times in the result set.

When you evaluate the XPath expression, the number of hits found for the selected node is shown in the Results pane. If the target node appears in the result set only once, the Results pane displays the message "Reached target uniquely", and the target indicator (red circle) in the left pane of the XPath Helper dialog changes to a check mark. If the node appears more than once, it displays the message "Reached target" with the target indicator changed to a check mark. If it does not appear at all, it displays the message "Did not reach target" and the target indicator remains as it is.

Removes the current target.

Sets the selected node as the key (indicated by a yellow key symbol) and displays the appropriate XPath expression in the text area of the XPath Expression tab.

Each time you set a key, a text box is shown next to the key symbol where you can enter a condition or constraint.

You can also enter a condition or constraint in the text area of the XPath Expression tab.

Removes the current key.

Sets the selected node as the root. Only the subtree starting from this node will be considered as the input parameter for evaluating and generating XPath expressions. 

Removes the current root.