The maskUnits attribute indicates which coordinate system to use for the geometry properties of the <mask> element.

The null keyword refers to the null primitive value, which represents the intentional absence of any object value.

The Rust Prelude

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The glyph-orientation-horizontal attribute affects the amount that the current text position advances as each glyph is rendered.

The crossorigin attribute, valid on the <image> and <feImage> elements, provides support for configuration of the Cross-Origin Resource Sharing (CORS) requests for the element's fetched data.

The href attribute defines a link to a resource as a reference URL. The exact meaning of that link depends on the context of each element using it.

The diffuseConstant attribute represents the kd value in the Phong lighting model. In SVG, this can be any non-negative number.

The Uint8Array typed array represents an array of 8-bit unsigned integers. The contents are initialized to 0 unless initialization data is explicitly provided. Once established, you can reference elements in the array using the object's methods, or using standard array index syntax (that is, using bracket notation).

The JavaScript exception "missing ) after condition" occurs when there is an error with how an if condition is written. It must appear in parenthesis after the if keyword.