Braille pattern dots-4

The Braille pattern dots-4 ( ) is a 6-dot or 8-dot braille cell with the top right dot raised. It is represented by the Unicode code point U+2808, and in Braille ASCII with the "at" sign: @.
Unified Braille.
In unified international braille, the braille pattern dots-4 is used as a formatting indicator, accent mark, or punctuation.
Plus dots 7 and 8.
Related to Braille pattern dots-4 are Braille patterns 47, 48, and 478, which are used in 8-dot braille systems, such as Gardner-Salinas and Luxembourgish Braille.
related 8-dot kantenji patterns.
In the Japanese kantenji braille, the standard 8-dot Braille patterns 5, 15, 45, and 145 are the patterns related to Braille pattern dots-4, since the two additional dots of kantenji patterns 04, 47, and 047 are placed above the base 6-dot cell, instead of below, as in standard 8-dot braille.
Kantenji using braille patterns 5, 15, 45, or 145.
This listing includes kantenji using Braille pattern dots-4 for all 6349 kanji found in JIS C 6226-1978.