When an object is created in memory, the object reference (OREF) is represented as a string value when displayed with the Write command:
HICG>Set pat=##class(JD.Sample.patient).%OpenId(70)
HICG>Write pat
1@JD.Sample.patient ; "stringified" OREF
HICG>Zwrite pat
pat=1@JD.Sample.patient ; <OREF>
+----------------- general information ---------------
| oref value: 1
| class name: JD.Sample.patient
| %%OID: $lb("70","JD.Sample.
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