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Arrows
Glyph
Developer Set
off, Reboot, Energy
DarkSlateGray
512x512
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Signs & symbols
Buttons
power, restart, spark
OliveDrab
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UI
Basic interface
Reboot, off, restart
Black
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Business & finance
Devine Icons Part 2
restart
128x128
SEO & web
Metro Uinvert Dock
restart, power
ForestGreen
256x256
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Windows 8 icons
26x26
Ecqlipse 2
restart, power, Reset