Changes
→Some length
* Espace fine (thin space) : one point
useless unit: how about 0.1 * fontsize
* Espace avant-fine (eng ?) : one point and half (1pt ½)
useless unit: how about 0.1 * fontsize
* Moyenne (half) : quart de cadratin (quart of em) (¼ em) This is the size of the small non breakable space.
* Forte ou grosse : tiers de cadratin (word space) (1/3 em)