The fourth level for the source of Neshamos Yisroel: Ein Sof that’s before the Tzimtzum (HaRishon). The mashal of a stone engraved on one side versus the Luchos that were engraved all the way through. Chakika on one side has 1) Makom Achiza Ktzas, 2) The space of the letters can be filled with ink (i.e. Its a source for the Olomos that will follow). Chakika MaEver LiEver has neither of these aspects. Page 483, NEW SV p. 636-7.
