The <font-face-uri> SVG element points to a remote definition of the current font.

The encodeURIComponent() function encodes a URI by replacing each instance of certain characters by one, two, three, or four escape sequences representing the UTF-8 encoding of the character (will only be four escape sequences for characters composed of two surrogate characters). Compared to encodeURI(), this function encodes more characters, including those that are part of the URI syntax.

The equality (==) operator checks whether its two operands are equal, returning a Boolean result. Unlike the strict equality operator, it attempts to convert and compare operands that are of different types.

The <glyphRef> SVG element provides a single possible glyph to the referencing <altGlyph> substitution.

The parseInt() function parses a string argument and returns an integer of the specified radix (the base in mathematical numeral systems).

The textual content for a <text> SVG element can be either character data directly embedded within the <text> element or the character data content of a referenced element, where the referencing is specified with a <tref> element.

The <pattern> SVG element defines a graphics object which can be redrawn at repeated x- and y-coordinate intervals ("tiled") to cover an area.

The <polygon> SVG element defines a closed shape consisting of a set of connected straight line segments. The last point is connected to the first point.

The arabic-form attribute indicates which of the four possible forms an Arabic glyph represents.

The async function* keywords can be used to define an async generator function inside an expression.