I want to create a keyboard shortcut to quickly label a selected node.
The ideal shortcut would bring up a text box to show input, and then pressing Enter would assign the text as a Custom Label.
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As of version 2.81, Node labels are now quickly renamed with the hotkey F2.
Additionally, Ctrl F2 opens a Batch Rename window for bulk editing. These shortcuts also work with Objects, Bones, and Collections.
(Note: I originally posted this question in the context of version 2.79)