At the moment the SVG rasterizer uses Arial or a font that looks like it. It
lacks many characters needed by many languages.
The rasterizer should use fonts that have a better Unicode coverage like DejaVu
fonts for Latin, Greek and Cyrillic based scripts, etc.
Many of these fonts are free and/or Open Source.
should have words like Monɔkɔ, Nsɔ́ngɛ, etc, but the characters missing in Arial
are just not displayed.