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UI
Pixel
Fugue Icons
Application, horizontal, tile
DarkSlateGray
16x16
Text, horizontal, Blue
SteelBlue
Blue, document, horizontal
PowderBlue
32x32
Folder, Blue, horizontal
LightSteelBlue
Folder, open, Blue
24x24
Blue, horizontal, Folder
All, horizontal, border
Black
Folder, horizontal
DarkGoldenrod
Khaki
open, horizontal, Folder
horizontal, phone, media
Bar, ui, horizontal
Silver
ui, horizontal, pane
WhiteSmoke
splitter, ui, horizontal
horizontal, Blueprint
SkyBlue
horizontal, border
document, Text, horizontal
Lavender
document, horizontal
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Gnome icons
line, horizontal, Form
Mixed
Mini icons 2
horizontal, contract
10x10
expand, horizontal
Flip, horizontal, Object
Left, horizontal, gluepoint
horizontal, gluepoint, Center