%general-entities; ]> LFS development takes place using three main systems. Firstly, the mailing lists lfs-book@linuxfromscratch.org, lfs-dev@linuxfromscratch.org and (to a lesser extent) lfs-support@linuxfromscratch.org. Secondly the Trac bug tracking system, and thirdly the Subversion server where the book itself is stored. All of these services are provided by the server linuxfromscratch.org also known as belgarath.linuxfromscratch.org or more usually, belgarath. This single server provides mailing lists, web hosting, Subversion hosting, Trac and basically everything we use to work on the LFS project. The LFS book is written using Docbook-XML and is split into a number of XML files. The directories in the source tree represent the chapters of the book, and each XML file within a directory typically contains the text for a section within that chapter. This structure is designed to enable a contributor to quickly locate the particular area of the book they are wanting to edit. The Trac ticketing system for LFS can be found at . In order to be able to add, remove and edit tickets, you need to add an account and make sure you are logged in whenever you wish to perform such an action. You can query and read the trac database without logging in or creating a user. Note that all ticket messages are copied to the lfs-book@linuxfromscratch.org mailing list and that all editors should be subscribed to this and the lfs-dev@linuxfromscratch.org list at a minimum. Finally, there is the Subversion server which will be discussed in the following chapters.