%general-entities; ]> svn diff, or svn di. This is useful for three different purposes. Firstly, those without write access to the LFS Subversion server can use it to generate patches to send to lfs-dev@linuxfromscratch.org. To do this, simply edit the files in your local working copy then run svn diff > FILE.patch from the root of your LFS directory. You can then attach this file to a message to the lfs-dev list where editors can review the patch and apply it to the book. The second use is to find out what has changed between two revisions of a file by running: svn diff -r revision1:revision2 FILENAME For example: svn diff -r 99:100 index.xml will output a diff showing the changes between revisions 99 and 100 of index.xml. A third use is to recursively request all the changes between your working copy and the copy on the Subversion server. This is handy to do before running svn update to see what exactly has changed since the last time you ran the update command.