The stemh attribute indicates the horizontal stem width of the font.

A character escape represents a character that may not be able to be conveniently represented in its literal form.

The path attribute has two different meanings, either it defines a text path along which the characters of a text are rendered, or a motion path along which a referenced element is animated.

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

The <font-face-format> SVG element describes the type of font referenced by its parent <font-face-uri>.

Functions are one of the fundamental building blocks in JavaScript. A function in JavaScript is similar to a procedure—a set of statements that performs a task or calculates a value, but for a procedure to qualify as a function, it should take some input and return an output where there is some obvious relationship between the input and the output. To use a function, you must define it somewhere in the scope from which you wish to call it.

Apart from graphic primitives like rectangles and circles, SVG offers a set of elements to embed other types of content in images as well.

Operator precedence determines how operators are parsed concerning each other. Operators with higher precedence become the operands of operators with lower precedence.

Low-level languages like C, have manual memory management primitives such as malloc() and free(). In contrast, JavaScript automatically allocates memory when objects are created and frees it when they are not used anymore (garbage collection). This automaticity is a potential source of confusion: it can give developers the false impression that they don't need to worry about memory management.

This chapter documents all of JavaScript's standard, built-in objects, including their methods and properties.