The global isFinite() function determines whether the passed value is a finite number. If needed, the parameter is first converted to a number.

The eval() function evaluates JavaScript code represented as a string.

The <feMorphology> SVG filter primitive is used to erode or dilate the input image. Its usefulness lies especially in fattening or thinning effects.

The InternalError object indicates an error that occurred internally in the JavaScript engine.

The <feDiffuseLighting> SVG filter primitive lights an image using the alpha channel as a bump map. The resulting image, which is an RGBA opaque image, depends on the light color, light position and surface geometry of the input bump map.

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The <fePointLight> filter primitive defines a light source which allows to create a point light effect. It that can be used within a lighting filter primitive: <feDiffuseLighting> or <feSpecularLighting>.

The less than operator (<) returns true if the left operand is less than the right operand, and false otherwise.

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The horiz-adv-x attribute indicates the horizontal advance after rendering a glyph in horizontal orientation.