# Tools
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## Utils
 This icon clears the content of the current layer (but it keeps the layer in the layer stack).
 This icon will floodfill a color chosen in Color Wheel or Color Selector,
on the entire canvas. It is Alpha sensitive and the flood will depend on Opacity / Flow Value in the Top Bar.
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## Clear Undo History
"Clear Undo History" clears the actions’ cache. It means you won’t be able to undo your actions from that point.
Iliad User Documentation 
