My idea (if you want to try it yourselfe): first decompile this . shx into a . shp file (using dumpshx.exe from the Express tools) Autodesk Community, Autodesk Forums, Autodesk Forum To Assign an Asian-language SHX Font to a Text Style

: It correctly displays complex Vietnamese diacritics (accent marks) which standard CAD fonts like simplex.shx cannot render. Performance

Save Vn-uni.shx + vnieu.shx in a folder called CAD_Fonts . Whenever you send a drawing to a client, the fonts, or include a note: "Install Vn-uni.shx before opening."

: Use the DUMPSHX utility (found in AutoCAD Express Tools) to decompile the .shx into a .shp (Source Shape) file.