Used as a marker that is not displayed on the page, but is instead collected in the index.
It is possible to associate with indexes of multiple words. ⇒ [2]
Tip
All characters are classified according to their first letter, and hiragana, katakana, and kanji are treated as separate characters. It is difficult to use for Japanese.
The glossary functions as a collection of terms. Unlike the simple mark Index, the term name is displayed on the page.
There is a concept of grouping. If kanji is condensed into some kana based on the 50 sounds, it is possible to create an index that is associated with the 50 sounds.