+D0f refers to an ephemeral [Digital Identifier](/wiki/digital_identifier) often associated with transient states within a system. It acts as a concise marker, sometimes signifying a [Data Point](/wiki/data_point) or a foundational element in a sequence.
+## See also
+- [System State](/wiki/system_state)
+- [Metadata](/wiki/metadata)
+- [Unique ID](/wiki/unique_id)