Why should it display some black boxes in CJKOS occasionally?
When CJKOS meets a word which is enclosed in the current Charset but there is no word-shape display data for it in the font database of current Charset, it will display a black box instead of the word. This problem may be caused when you’ve installed the light version of font database for current Charset. In that case, CJKOS can’t find the exact font data to display some infrequently used words, so it will display black box instead. To install the full version of the font database should be an efficient solution for it.
