On Wayland-based platforms (i.e. very new Linux systems), setting SDL_VIDEODRIVER=x11 may be needed for the SDL example; the equivalent for the GLUT example is PYOPENGL_PLATFORM=glx.

The skparagraph-example example generates the below as an example of multilingual paragraph layout. Note on Linux, it is highly sensitive to locale, and you might need to unset LANG and FC_LANG if you have unusual (non-English) settings.