A Segments object is an iterable collection of the segments of a text string. It is returned by a call to the segment() method of an Intl.Segmenter object.

The keys() method of Map instances returns a new map iterator object that contains the keys for each element in this map in insertion order.

The Math.LOG2E static data property represents the base 2 logarithm of e, approximately 1.442.

The Math.SQRT2 static data property represents the square root of 2, approximately 1.414.

The map() method of Iterator instances returns a new iterator helper that yields elements of the iterator, each transformed by a mapping function.

The at() method of String values takes an integer value and returns a new String consisting of the single UTF-16 code unit located at the specified offset. This method allows for positive and negative integers. Negative integers count back from the last string character.

The small() method of String values creates a string that embeds this string in a <small> element (<small>str</small>), which causes this string to be displayed in a small font.

The sup() method of String values creates a string that embeds this string in a <sup> element (^str), which causes this string to be displayed as superscript.

The setInt16() method of DataView instances takes a number and stores it as a 16-bit signed integer in the 2 bytes starting at the specified byte offset of this DataView. There is no alignment constraint; multi-byte values may be stored at any offset within bounds.

The setFloat32() method of DataView instances takes a number and stores it as a 32-bit floating point number in the 4 bytes starting at the specified byte offset of this DataView. There is no alignment constraint; multi-byte values may be stored at any offset within bounds.