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In Unicode, a block is defined as one contiguous range of code points. Blocks are named uniquely and have no overlap. They have a starting code point of the form nnn0 and an ending code point of the form nnnF. A block explicitly can include code points that are unassigned and non-characters.〔(Unicode glossary )〕 Code points not belonging to any of the named blocks, e.g. in the unassigned planes 3–13, have the value block="No_block". Conversely, every assigned code point has a property "Block name", which names in which block the character is. This is determined by the code point only, although a block name will have a descriptive nature: "Tibetan" or "Supplemental Arrows-A". All assigned code points have a single block name. Subdivisions, such as "Chess symbols" in the block Miscellaneous symbols, are not a "block". The subgroup name is an informative editorial addition only. The number of code points in a Unicode block is a multiple of 16. Unicode blocks range in size from the minimum of 16 to a maximum of 65,536 code points. Unicode 8.0 defines 262 blocks:〔(Unicode 8.0.0 UCD )〕 * 160 in plane 0, the Basic Multilingual Plane (BMP) * 93 in plane 1, the Supplementary Multilingual Plane (SMP) * 5 in plane 2, the Supplementary Ideographic Plane (SIP) * 2 in plane 14 (E in hexadecimal), the Supplementary Special-purpose Plane (SSP) * One each in planes 15 (Fhex) and 16 (10hex), called Supplementary Private Use Area-A and -B ==See also== * Scripts in Unicode 抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Unicode block」の詳細全文を読む スポンサード リンク
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