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Mixed
Smooth
48px web iconset
signal, Attention
SandyBrown
48x48
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Files & folders
Spirit20
Attention, Info, Information
SteelBlue
20x20
Humility
Attention, Emblem, important
Black
32x32
Simplicio
warning, Alert, Attention
Goldenrod
128x128
DelliOS System Icons
grey, Attention
512x512
Attention
Network & communications
Oxygen
Dialog, warning, Alert
Orange