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UI
Glyph
GlyphPack
Circle, question
Black
512x512
Outline
ikooni outline: Free Basic
Info, message bubble, about
Freecns Cumulus
help, question, mark
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Smooth
Super Mono Stickers
sticker, frame, question
64x64
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3D
Gloss Basic Icons
Faq, question, Information
32x32
AzulLustre 2
support, question, help
256x256
Gnome Web Icons
Dialog, Faq, help