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UI
Outline
ikooni outline: Free Basic
Caution, Error, danger
Black
512x512
Error, Caution, Alert
Linecon
Alert, Alarm, Clock
Glyph
Very Basic. Android L (Lollipop)
problem, Attention, warning
Freecns Cumulus
warning, Error, Attention
PNG ICO ICNS MORE
Free Mobile Icon Kit
Attention, Message
64x64
PNG ICO MORE
3D
Gnome Web Icons
Attention, important
Nuvola
warning, important, Attention
128x128
