Worried about PECL

Currently the online manual for php is great. My concern is that the documentation for PECL extensions is almost non-existent. Since some php extensions are being moved/replaced by PECL extensions are we going to get non-existent documentation? For example: www.php.net/mime-magic "This extension has been deprecated as the PECL extension fileinfo provides the same functionality (and more) in a much cleaner way." http://pecl.php.net/package/Fileinfo provides no documentation so what these extra functions are, I have no idea. Worse, I now have no idea how to do mime_content_type(). www.php.net/mcal "Note: This extension has been removed as of PHP 5 and moved to the PECL repository." There is no mention of mcal on the pecl website. I appreciate that PECL will more relevant to PHP5, but PHP5 is close is the documentation close too? -Peter