Apple Macintosh Korean Language Kit - Manual (Page 28)

I have been using another Korean product on my Macintosh computer, but I can’t read
the documents I created with it.
The Korean Language Kit fonts are based on the standard Korean encoding
as defined by the Korean information technology standards committee. The
product you have been using may be based on another character encoding;
therefore the documents will not be compatible. Please check with the
developer of the other Korean product.
A 28 Chapter 5