XS_DEFAULT_UNICODE_FONT_DRAWING_PRINTING
Category in Advanced options dialog Printing
Use this advanced option to define the default font that is used when the selected font for printing does not contain all of the multibyte characters used in the text. When a default font is defined, the characters are shown correctly even without embedding fonts. By default, the font is set to Arial Unicode MS. This font might not be installed on your machine by default, and you may need to install it. You can also define another font that contains the characters you need and that you have installed on your machine.
This advanced option is user specific and the setting is saved in options.bin under the user folder, for example, in C:\Users\<user>\AppData\Local\Trimble\Tekla Structures\<version>\UserSettings. Restart Tekla Structures to activate the new value.