19.1.2 Encoding Unicode code points: UTF-32, UTF-16, UTF-8 The hexadecimal numbers of the code points tell us that the first three characters reside in plane 0 (within 16 bits), while the emoji resides in plane 1. Let’s check the code points of a few characters: Planes 1-16 are called supplementary planes or astral planes. Available for character assignment by parties outside the ISO and the Unicode Consortium.Plane 15–16: Supplementary Private Use Area (S PUA A/B), 0x0F0000–0x10FFFF.Contains non-graphical characters such as tag characters and glyph variation selectors.Plane 14: Supplementary Special-Purpose Plane (SSP), 0圎0000–0圎FFFF.Contains additional CJK (Chinese, Japanese, Korean) ideographs.Plane 2: Supplementary Ideographic Plane (SIP), 0x20000–0x2FFFF.Supports emojis and many other symbols.Supports historic writing systems (e.g., Egyptian hieroglyphs and cuneiform) and additional modern writing systems.Plane 1: Supplementary Multilingual Plane (SMP), 0x10000–0x1FFFF.Contains characters for almost all modern languages (Latin characters, Asian characters, etc.) and many symbols.Plane 0: Basic Multilingual Plane (BMP), 0x0000–0xFFFF.These 21 bits are partitioned in 17 planes, with 16 bits each: Since then, the number of characters has grown considerably and the size of code points was extended to 21 bits. The first version of Unicode had 16-bit code points. The most popular format, UTF-8, has 8-bit code units. Each code unit has the same size, which depends on the encoding format that is used. One or more code units encode a single code point. Code units are numbers that encode code points, to store or transmit Unicode text.
CODEPOINTS EMOJI SKIN
Most of them represent visible symbols but they can also have other meanings such as specifying an aspect of a symbol (the accent of a letter, the skin tone of an emoji, etc.). Code points are numbers that represent the atomic parts of Unicode text.Two concepts are crucial for understanding Unicode: Unicode version 1.0.0 was published in October 1991. A new version of the standard is published every year (with new emojis, etc.). The standard is maintained by the Unicode Consortium.
CODEPOINTS EMOJI SOFTWARE
Virtually all modern software that works with text, supports Unicode. Unicode is a standard for representing and managing text in most of the world’s writing systems.
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