Patches
What is a Patch?
A patch is a file that finds the differences between two files, allowing you to add the difference in code to your files.
What could this be used for?
This could be used for adding features to your server. It is a lot easier than a step-by-step instructional on adding it. It also saves a lot of time.See EOSERV_TortoiseSVN for more information on creating/applying patches.