** The digital display will display the fraction of the tank that's full, in multiples of the fraction-unit.

* "Stub" graphics will be created in the correct format with the correct sizes/ratios. These can be used during software development and may be useful as examples for the artists who will create the final artwork.

* Each new graphic created will be tested immediately to ensure it's displayed correctly in Processing.js sketches. A simple tool will be created to facilitate this testing.