The area used by for the SVG object will be a
rectangle of 200 pixels by 200 pixels (see the
SVG element's width and height attributes).
The user coordinates of this rectangle will be
defined by a rectangle from point (0, 0) and
(1000, 1000). See the SVG element's viewBox
attributes.
The center of the fePointLight is also in the
center of the SVG area as defined by the
fePointLight elements cx and cy attributes, the
center coordinates being (500, 500).
The radius of the fePointLight being defined by
the r attribute of the fePointLight element, and
has a value of 200.
The fePointLight is filled with a solid color of
yellow as defined by the lighting-color
attribute.
The fePointLight is outlined in blue with a line
width of 10, as defined by the stroke and
stroke-width attributes. The width of 10 is not
pixels, but is 10 within the user coordinate
system. In this case the width in pixels would
be approximately (10 / 1000) * 200 pixels or two
pixels.