Then you
don't understand what he's talking about.
Basically the text encoding system is the same in all versions. <--- yes it is
For the Japanese version they used special codes for to signify Symbols in use in Japan.
IE
FA - extended characters.
FC - extended characters.
FD - extended characters. (not implemented in battle module, don't know why)
FE - extended characters. (not implemented in battle module, don't know why)
FA FC FD and FE point to extra pages of symbols if you notice this adds 256 symbols per page (4 pages).
Other codes are only used in the special data that loaded on boot in kernel.bin (he posted on that if you read my querry).
Not all codes are text some are, window related (and color codes as you pointed out).
It appears that FA and FC are the only extended character sets used as many features turned out unnecessary in FF7.
Cyb