House of Suns - What does Hesperus scratch onto the wine glass?

Question

In House of Suns, Hesperus scratches a figure resembling a spoked wheel into a wine glass with his thumbnail. Does this represent the:

Remnants of the supramundane ring around Neume?

or the

Open stardam around the Andromeda wormhole?

or is it intentionally left ambiguous?

Answer 1

It's the orbital structure around Neume. Purslane realizes this upon approaching the planet and observing the structure from space:

‘Hesperus knew this place,’ Purslane said. [..] ‘His design - the cartwheel. We're looking at it. It's a picture of Neume, from space.’