[ Now that they're onto a separate topic, he straightens up - but just a little, barely perceptible. ]

They are blueprints. I made them while still in my own world. I drew them as an exercise of memory.

[ But since this is Tieria, he feels compelled to say more: ]

These were plans for a project, to build vehicles capable of traveling into space. They were not realized due to external circumstances, however.