This window has a menu for selecting the page or feature to view:

Info Displays meta-data and the hint for the node.

Dependents – A list of the node's dependent topics.

Antecedents – A list of the node's antecedent topics.

Influences – A list of the node's influences (how strongly its data-less antecedents can affect it).

Contributions – under development
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Properties – Editor for node properties.