pro-sumti: strong-memory something3/eidetic di/elephant thing3 (logically quantified existential, arbitrarily-long-scope pro-sumti)
The meaning is the same as di and it functions the same way except that any assignment/qualification placed upon it (except for quantification) is semantically retained throughout a discourse until da'o is uttered; it acts as though the scope (except for quantification that occurs outside of a POI-clause) of all previous usages are arbitrarily long, terminated only by da'o or the end of the discourse. User beware: usage is tricky. See also: kau'a, kau'e, da'au, di.