This is the core of the content: the bunk of the codes we need to anaylsis are in normal files, and here is a list of all the files present in the phpBB2.1/3.0 . Click on them to start exploring the code in that file line by line.
In this scheme, files are categorized by their directory, and within the same folder they're arranged alphabetically. Backend files are italiced. For alternative scheme, see the end of this page.