2. For Heidegger die Sache selbst is not Sein but that which makes possible the phenomenological occurrence of Sein.

a. Heidegger designates the basic question about his focal topic (= die Grundfrage that pursues die Sache selbst) as die Frage nach dem Sein selbst or nach dem Sein als solches. This question moves beyond the Leitfrage (which asks what/how/that entities are and what the highest entity is) as well as beyond all takings-as in which such "being" occurs. The Grundfrage asks what it is that makes possible all such takings-as and thus all instances of "being."

b. If "being" shows up only in a Seinsverständnis, Heidegger's central topic is "die Bedingung der Möglichkeit des Seinsverständnisses" (GA 24, 405.12-13).

{the condition of the possibility of its understanding}

c. If "being" is the is-ness, we ascribe to entities, Heidegger is after what allows for such ascribed is-ness: "Grund und Zulassung der Seiendheit" (GA 68, 51.5).

{Reason and permission of the beingness}
d. If "being" is the presence/accessibility of entities, Heidegger asks how such presence/accessibility comes about" "Die Frage, inwiefern es Anwesenheit als solche geben kann" (SD 77.17-18).

{Reason and permission of the beingness}

e. If "being" is the manifestness/availability of entities, Heidegger's focal topic is the prior possibilizing of that manifestness/availability: "die vorgängige Ermöglichung der Offenbarkeit von Seiendem" (GA 9, 114.26-27).

{the previous making possible the obviousness of what there is}
or
{The a priori enabling of the open disclosure of beings}

¶ 8:46 PM