According to 村田忠禧, a Professor of Yokohama National University, JIS-CODE has 70 undisplayable kanji characters for GB-CODE users(mostly 国字), and can't display 511 GB-CODE hanji characters, i.e., the rest of characters, 6285(6355-70) JIS kanji and 6252(6763-511) GB hanji, would be displayable for each users.