advice alert appropriate-behavior appropriate-behaviour avoid be-careful below-ground black cable care careful caution communicating communication concern digging digging-dangers optical-fibre-cable potential risk risks risky safety sign signs stay-clear warned warning warning-sign yellow add adding-machine addition appearance bulky buttons calculate calculating calculations calculators clear Clearance computers computing digits handle heavy input large limitations limited machine numbers numerals office office-equipment output predating press pressing problem-solving problems slow subtract subtraction technology abstract aeroplanes aircraft airplanes airport art artistic artwork background canvas concept curved curves design engines fuselage graphic illustration landed landing gear light painting parked planes propellers render Rendered rendering scene shadows sunlight tarmac texture textured textures transport transportation travel traveling travelling wheels windows windscreens wings wingtips analog analog-magnetic-tape analog-sound-recording-medium articulated-voices audio-editing audio-play-back audio-recording audio-signal audio-storage-device audio-tape-recorder irrelevant magnetic-tape magnetic-tape-reel magnetisable-tape outdated play-back quality Recording reel reel-to-reel sound tape-deck tape-head tape-machine tapes unwanted useless at anchor Australia bay boat boats business district CBD choppy conditions city city scapes city views distance distant expanse of water harbor harbour high rise Jetty masts Melbourne navigation office buildings Port Phillip Bay sailing sailors sea ships sight-seeing skyline tied up tourism Victoria views water waves wealth Williamstown yachts acacia Africa alone desert farm karoo landscape lonely lucerne plain plains rocks tree trees wheat beach chair coast cruise honeymoon island Jamaica man ocean recline sand shore summer sunglasses trip vacation