Unicode block: Difference between revisions

Revision as of 05:59, 24 June 2011

Revision as of 16:07, 25 July 2011

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In '''[[Unicode]]''', a '''block''' is defined as one continuouscontiguous range of [[code pointspoint]]s. Blocks are named uniquely and have no [[intersection (set theory)|overlap]]. They may be defined with the starting and ending code points. The block explicitly can include code points that are [[General Category|unassigned and non-characters]].<ref>[http://www.unicode.org/glossary/#B Unicode glossary]</ref> Code points that are not inbelonging to oneany of the named blocks, e.g. in the unassigned [[Plane (Unicode)|planes]] 3-133–13, 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 Unicode|Chess symbols]]" in the block [[Miscellaneous symbols (Unicode block)|Miscellaneous symbols]], are not a "block". The subgroup name is an informative editorial addition only.

{{Unicode blocks}}