Unicode character property

Unicode assigns character properties to each codepoint. The properties can be used to handle characters in processing texts, like line-breaking, script direction right-to-left, or script naming. Slightly inconsequently, some character properties are also defined for codepoints that have no character assigned, and codepoints that are defined "not a character", etc.

Properties has level of forcefulness: normative, informative, contributory, or provisional. Technically a property may be assigned by specifying a range of codepoints.

The character properties are in these topics:

• Name
• General Category
• Other important general characteristics
• Display-related properties (bidirectional class, shaping, mirroring, width, and so on)
• Casing (upper, lower, title, folding—both simple and full)
• Numeric values and types
• Script and Block
• Normalization properties (decompositions, decomposition type, canonical combining class, composition exclusions, and so on)
• Age (version of the standard in which the code point was first designated)
• Boundaries (grapheme cluster, word, line, and sentence)

General Category

Each codepoint is assigned a value as for its General Category. This is one of the character properties that are also defined unassigned codepoints, and codepoints that are defined "not a character".