CJK Strokes (Unicode block)
CJK Strokes is a Unicode block that provides a set of glyphs showing the common stroke shapes used in Chinese, Japanese, and Korean writing. The block’s code points run from U+31C0 to U+31EF, for a total of 48 code points. All of them are in the Basic Multilingual Plane and are assigned to the Common script. Of the 48 code points, 39 are assigned and 9 are reserved for future use.
The purpose of CJK Strokes is to offer a standard reference set of stroke types (such as horizontal, vertical, dots, and various diagonals) that are used to describe how CJK characters are drawn. It is not meant to encode full characters by itself; instead, it supports descriptions, fonts, rendering tests, and related linguistic tools.
Unicode history: CJK Strokes was introduced in Unicode 4.1 (2005) with 16 new code points. Unicode 5.1 (2008) added 20 more. Unicode 15.1 (2023) added 1, and Unicode 16.0 (2024) added 2 more, bringing the total assigned points to 39.
Documentation and access: The block has a code chart and an associated web page, and it is described in the Unicode standards alongside related CJK blocks such as CJK Unified Ideographs and its extensions.
This page was last edited on 2 February 2026, at 16:24 (CET).