| Some public-domain images were obtained from openclipart.org: | |
| thermometer.png: http://openclipart.org/detail/170672/weather-icon---hot-by-gnokii-170672 | |
| chip.png: http://openclipart.org/detail/100867/generic-chip-by-pgbrandolin | |
| battery.png: http://openclipart.org/detail/34417/tango-battery-by-warszawianka | |
| play.svg: http://openclipart.org/detail/164047/blue-play-button-pressed-down-by-gr8dan | |
| warning.svg: http://openclipart.org/detail/122437/warning-button-by-ricardomaia |