From my own limited experience, ancient documents tended to be very elliptical; when everything had to be copied out by hand the reader was expected to do a lit

From my own limited experience, ancient documents tended to be very elliptical; when everything had to be copied out by hand the reader was expected to do a little more work to understand what documents meant. So this tablet may have been the equivalent of notes accompanying a lecture: "As you can see from the triangles on this diagram..."