The tav is the last letter of the Hebrew alphabet. Its name - spelled tav-vav - means "mark," "sign," "line," "feature" or "label." In Aramaic, the same letters tav-vav mean "further." And so in the context of this personal talMUD about the aleph-tav, it takes on even richer significance.

When pronounced oht, the means "letter of the alphabet." As you can see elsewhere in this talMUD on these two letters, reading the word as eht means the accusative case. I interpret it as a "mark" or "sign" of the phonetic alphabet itself, since the accusative is an abstract grammatical form that cannot be rendered in a pictographic script. When the phonetic alphabet is invented, it makes the transcription of the eht possible, and so the alephtav is the sign of the Hebrew alphabet, which I also call alephtav.

Thus, the tav comes loaded with extra self-reference. If within the aleph-tav the aleph is the transcendental essence, the signified, the tav is the sign or signifier. It is the sign of the sign, the mark of the mark, and as the anchor or omega of the Hebrew alephtav, invites us to further Midrash and the multiplication of interpretations.