Hi Stephen J. Turnbull wrote: Ok I understood that I have to add my own tables for new charsyms, in order ot get truetype fonts in use. And made some experiments (defvar x-symbol-myfont-table '((longarrownortheast 33 (arrow) (size big . arrownortheast)) (Xso 968 (symbol) nil nil ("xso") ) (mus 8719 (symbol) nil nil ("mus") ) ) ) Initialized a font set,... And substituted x-symbol-mule-make-char with (defun x-symbol-unicode-make-char (cset encoding charsym face coding) "THis is a journey into sound. I don't know anything. But let's try everything" (if (> encoding 256) (warn "encoding of character %s is %s " charsym encoding)) (unless (char-table-p x-symbol-mule-char-table) (setq x-symbol-mule-char-table (make-char-table 'generic)) (put-char-table t nil x-symbol-mule-char-table)) (let* ((char (if (> encoding 265) (unicode-to-char encoding) (if (< encoding 128) (make-char (caadr cset) encoding) (make-char (caddr cset) (- encoding 128))) ))) (put-char-table char charsym x-symbol-mule-char-table) (x-symbol-set-cstrings charsym coding char (and coding (>= encoding 160) (make-char x-symbol-mule-default-charset (- encoding 128))) face) )) The "greek" characters get displayed nicely in the chosen tt-font, wheras the mathematical operator leads to the warning: (12) (font/notice) Unable to instantiate font for charset chinese-gb2312, face default The font pattern of the default font is sans-serif. At the moment I don't have any complete chinese or japanese font on my system, maybe that is the reason. But it should not be necessary for that mathematical operators. What do you think about the unicode version of x-symbol-make-char? Should I start do redefine the charsyms of symbols and operators Yours Stefan -- Stefan Holst http://numerik.mathematik.uni-mainz.de/~juengel FB Mathematik u. Informatik Email: holst(a)mathematik.uni-mainz.de Joh. Gutenberg Univ. Mainz Telefon: ++49(0)6131/39-20172 D - 55099 Mainz Fax: ++49(0)6131/39-23331