Font Family

RTF-J control words Definition and the interpretation in Word
\jis RTF-J uses \jis as a control word for character set. Word J interprets this as \ansi, which is the default character set used if the character set is not defined.
\fjminchou and \fjgothic RTF-J uses \fjminchou and \fjgothic to specify font family. Word J interprets these as \fnil, which is the default font family.

ShiftJIS Font Without \cpg or \fcharset

If \cpg or \fcharset control words are not present, Word J uses the text metrics of the font before determining the character set of these fonts. If the font is unknown, Word J assumes it is SHIFTJIS_CHARSET.