As an isolated character is one of the Kyōiku kanji or Kanji taught in elementary school in Japan.[1]
It is one of the 20 kanji added to the Kyoiku kanji that are found in the names of the following prefectures of Japan.[2] It was added because it is a character in 香 (Kagawa).[2]
Fazzioli, Edoardo (1987). Chinese calligraphy : from pictograph to ideogram : the history of 214 essential Chinese/Japanese characters. calligraphy by Rebecca Hon Ko. New York: Abbeville Press. ISBN0-89659-774-1.
GF 0011-2009 Table of Indexing Chinese Character Components prescribes 201 principle indexing components and 100 associated indexing components (in brackets) used in Simplified Chinese. Not all associated indexing components are listed above.