The multiplication assignment (*=) operator performs multiplication on the two operands and assigns the result to the left operand.

The rx attribute defines a radius on the x-axis.

The overline-thickness attribute represents the ideal thickness of the overline. The overline thickness is expressed in the font's coordinate system.

The mathematical attribute indicates the alignment coordinate for glyphs to achieve mathematical baseline alignment for horizontally oriented glyph layouts. The value is an offset in the font coordinate system.

The async function* declaration creates a binding of a new async generator function to a given name.

The JavaScript exception "SyntaxError: private fields can't be deleted" occurs when delete is used on a private property of a class or an object.

The Intl.ListFormat() constructor creates Intl.ListFormat objects.

The lighting-color attribute defines the color of the light source for lighting filter primitives.

The import() syntax, commonly called dynamic import, is a function-like expression that allows loading an ECMAScript module asynchronously and dynamically into a potentially non-module environment.

The attributeName attribute indicates the name of the CSS property or attribute of the target element that is going to be changed during an animation.