feComposite
The operator SVG attribute specifies the compositing operation that is to be performed.
Value
over | in | out | atop | xor | lighter | arithmetic
Default
arithmetic
atop
in
lighter
out
over
xor
Internal
External
feMorphology
The operator SVG attribute specifies a keyword indicating whether to erode (thin) or dilate (fatten) the source graphic.
Value
Default
dilate
erode
Internal
External