If not already present this prototype is auto-set via the app when dragging in reference data to Tinderbox.
Initially implemented to support Bookends integration. Useful when adding structured reference data, e.g. via RIS data import. The includes $URL as well as $ReferenceURL. $URL holds a the URL to the reference in the reference manager (e.g. a local pseudo-protocol
bookends://…), whilst $ReferenceURL holds the reference URL for the reference source (if it has one).
This prototype's non-default customisations other than $IsPrototype, $Name, and intrinsic map features (height, width, etc.) are listed below.
$Color: "muted green".
$AccentColor: "dark green".