DBpedia – Linked Data Fragments

Matches in DBpedia 2015-10 for { ?s ?p "In the Unicode standard, a plane is a continuous group of 65,536 (= 216) code points. There are 17 planes, identified by the numbers 0 to 16decimal, which corresponds with the possible values 00–10hexadecimal of the first two positions in six position format (hhhhhh). The planes above plane 0 (the Basic Multilingual Plane), that is, planes 1–16, are called “supplementary planes”, or humorously known as “astral planes”. As of Unicode version 8.0, six of the planes have assigned code points (characters), and four are named.The 17 planes can accommodate 1,114,112 code points, a limit which is unlikely to be reached in the foreseeable future even if previously unknown scripts with tens of thousands of characters are discovered. The Unicode Consortium has stated that the current limit will never be changed. The odd-looking limit (which is not a power of 2) is due to the design of UTF-16, and is the maximum value that can be encoded by it. UTF-8 was designed with a much larger limit of 231 code points (32768 planes), and can encode 221 code points (32 planes) even if limited to 4 bytes.Planes are further subdivided into Unicode blocks, which unlike planes, do not have a fixed size. The 262 blocks defined in Unicode 8.0 cover 24 percent of the possible code point space, and range in size from a minimum of 16 code points (eleven blocks) to a maximum of 65,536 code points (Supplementary Private Use Area-A and -B, which constitute the entirety of planes 15 and 16). For future usage, ranges of characters have been tentatively mapped out for every known current and ancient writing system."@en }

• Plane_(Unicode) abstract "In the Unicode standard, a plane is a continuous group of 65,536 (= 216) code points. There are 17 planes, identified by the numbers 0 to 16decimal, which corresponds with the possible values 00–10hexadecimal of the first two positions in six position format (hhhhhh). The planes above plane 0 (the Basic Multilingual Plane), that is, planes 1–16, are called “supplementary planes”, or humorously known as “astral planes”. As of Unicode version 8.0, six of the planes have assigned code points (characters), and four are named.The 17 planes can accommodate 1,114,112 code points, a limit which is unlikely to be reached in the foreseeable future even if previously unknown scripts with tens of thousands of characters are discovered. The Unicode Consortium has stated that the current limit will never be changed. The odd-looking limit (which is not a power of 2) is due to the design of UTF-16, and is the maximum value that can be encoded by it. UTF-8 was designed with a much larger limit of 231 code points (32768 planes), and can encode 221 code points (32 planes) even if limited to 4 bytes.Planes are further subdivided into Unicode blocks, which unlike planes, do not have a fixed size. The 262 blocks defined in Unicode 8.0 cover 24 percent of the possible code point space, and range in size from a minimum of 16 code points (eleven blocks) to a maximum of 65,536 code points (Supplementary Private Use Area-A and -B, which constitute the entirety of planes 15 and 16). For future usage, ranges of characters have been tentatively mapped out for every known current and ancient writing system.".