We could:

• link to an external PHP specific Coding Standard, and

• and create a wiki page, here at Savannah, to add extra

   notes, as the one about the 'XXX' flags.
  
   Note: The advantage of keeping a wiki, instead of adding
         it at the Hacker's Guide is that we have not that
         thanslate it!!. I personally think that that is a
         great advantage.
         That is technical documentation, and the almost
         official development language is English.  Anyway,
         we can keep the current Hacker's Guide translated,
         as a general guide, as an introduction.