The commands of the filters theme can be used to set filter effects that are applicable to the SVG elements. A filter effect consists of a succession of graphic operations, applied to a source graphic, which produces a modified graphic.
The result of the filter effect is rendered on the target device in place of the original source graphic.
A filter is set using the SVG_Define_filter command, found in the “Structure and Definitions” theme, and is applied using the SVG_SET_FILTER SVG_Define_filter command, found in the “Structure and Definitions” theme, and is applied using the SVG_SET_FILTER command, found in the “Attributes” theme. The commands of the filters theme are used to construct filtering operations or “filter primitives”.