The Coder remained still. It was impossible to tell what his reaction was. His whole body was encased in an interlocking exoskeleton like chitin on a beetle, and his features were hidden by a full face helmet of smooth black. Two bulbous, blank eyes glowed pale blue from within. There was a circular grille on his thin chest where his voice came from, flat and mechanical. "Vry wll," he said and continued counting out chits.

...

Coders were mechanics, whose purpose was to understand the fingerprints of the deity in circuitry and the interlocking of a gear or a cog. They could always be relied on to buy technology like a glimmer visor. Rail was selling his now, to make extra money for their passage up-Artery towards the centre of Orokos.

...