Examples of General Categories are "Lu" (meaning upper-case letter), "Nd" (decimal digit), "Pi" (open-quote punctuation), and "Mn" (non-spacing mark, i.e. Other classifications Įach Unicode point also has a property called " General Category", that attempts to describe the role of the corresponding symbol in the languages or applications for whose sake it was included in the system. in the unassigned planes 4–13, have the value block="No_block".
Unicode char ref wiki code#
Code points not belonging to any of the named blocks, e.g. However, a block may also contain unassigned code points, usually reserved for future additions of characters that "logically" should belong to that block. ) The size of a block may range from the minimum of 16 to a maximum of 65,536 code points.Įvery assigned code point has a glyph property called "Block", whose value is a character string naming the unique block that owns that point. (These constraints are intended to simplify the display of glyphs in Unicode Consortium documents, as tables with 16 columns labeled with the last hexadecimal digit of the code point. The starting code point and the size (number of code points) of each block are always multiples of 16 therefore, in the hexadecimal notation, the starting (smallest) point is U+ xxx0 and the ending (largest) point is U+ yyyF, where xxx and yyy are three or more hexadecimal digits.
īlocks are pairwise disjoint that is, they do not overlap. (When comparing block names, one is supposed to equate uppercase with lowercase letters, and ignore any whitespace, hyphens, and underbars so the last name is equivalent to "supplemental_arrows_a" and "SUPPLEMENTALARROWSA".
Unicode blocks are identified by unique names, which use only ASCII characters and are usually descriptive of the nature of the symbols, in English such as "Tibetan" or "Supplemental Arrows-A".
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