Actually the "font" is not really suited for either. The basic structure is a large ring of four arcs in which for smaller rings (also made up of four arcs) is inscribed. Basically the last puzzle of Myst - Exile I decided to use the large circle to encode one vowel, the upper and left circles to endcode the leading consonant (or consonantal structure) and the right and lower circles describe the trailing consonant. The consonants themselves are mostly based upon those of Tolkien's elfish languages, e.g. grouped by articulation point, voice etc...
Thanks to some extra bits I can use the glyphs to approximate most German or English syllables but certain consonant blocks just won't go (like "spring": I can do "sping" and "pring" but not both. German consonant+st-endings [think "ernst" and nearly all second person singular verb endings] are also problematic).
But all this should probably go in its own thread...