By default, Drill Down Graph PRO uses the node IDs as node display names (as defined by the Source Nodes and Target Nodes fields). Node IDs in these fields cannot contain spaces, which may impact readability or appearance of the chart.

You can use this field to assign a custom display name for the target nodes independently from their node IDs. For example, if the target node ID is “JohnRDoe", you can enter the full name in this field to display it properly – “John Richard Doe”.