PatternFilling
PatternFilling[obj] is a two-dimensional graphics directive specifying that obj should be used to fill faces of polygons and other filled graphics objects.
PatternFilling["name"] uses the specified pattern "name".
PatternFilling[obj,size] specifies the size of the object obj.
PatternFilling[obj,size,{dx,dy}] moves the object obj by the offset {dx,dy}.
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