The following are notions from my trainer/tech writer side, in case any resonate:

- A clear “What it affects and what it shouldn’t mangle” for those who can’t read PHP like English, don’t necessarily have time to experiment, and get strangely twitchy about unknown pervasive code ;-)

- Examples/recipes/snippets–even without comments something real is so useful vs. trying to grok a module as theory.

- HTML or PDF addition to the current docs for absorbing big pictures from general concepts (hyphenation, fractions), rather than small bites from known terms (set_dewidow).

- Could you add to http://kingdesk.com/projects/php-typography-documentation/ a set of String/Action/etc. links? Or maybe turn it into a table indicating what’s what? Took me a couple minutes to realize there were 2+ destination pages :-)

- In the function reference, a couple instances of the code boxes such as for “set_​tags_​to_​ignore()” seem to crop on print. Right now I think that info is relatively minor, but just wanted to mention for future writing or style updates. (Keep seeing some great wrapped #ed line formats on blogs–must be a plugin or JS framework?)

Does it replace the space in these particular cases* with alt+0160?

http://fr.wikipedia.org/wiki/Espace_ins%C3%A9cable
*”Le code typographique français recommande, contrairement à d’autres langues telles que l’anglais, une espace insécable devant les signes de ponctuation doubles (point-virgule, deux-points, point d’interrogation, point d’exclamation), entre les guillemets et le texte qu’ils renferment, ainsi que comme séparateur des groupes de caractères (séparateur de groupes de 3 chiffres dans les nombres supérieurs au millier, séparateur sans valeur facilitant la lecture des numéros de téléphone ou des numéros et codes d’identification, etc.).”

No-break thin space, known in Unicode as “NARROW NO-BREAK SPACE” (U+202F). This is required for French punctuation (before ?, !, : or ;).