docbook function naming

Hi, what is the standard for function naming in docbook? It's basically saying this in the various docs: Comply with pear standards but you must use lowercase. And pear standards say use getSettings instead of get_settings. And phpdoc standards say getsettings instead of getSettings. So what should it be? Can i use all lowercase in ID="function.functionname" and <function>functionName</function> and <refname>functionName</refname> etc.? Or should i break the pear naming standards? the phpdoc/howto.html.tar.gz/howto/html/chapter-conventions.html says: "Function reference IDs look like this (case should be consistent with the rest of the function naming standards, i.e. lowercase): function.imageloadfont. Please note that since underscores cannot be used in IDs, they should be replaced by minus signs (-)." http://php.net/manual/en/pear.standards.naming.php say: "Functions and methods should be named using the "studly caps" style (also referred to as "bumpy case" or "camel caps"). Functions should in addition have the package name as a prefix, to avoid name collisions between packages. The initial letter of the name (after the prefix) is lowercase, and each letter that starts a new "word" is capitalized. Some examples:" /Morgan