The default processing order for methods can be overriden, however, by including a release order list in the implementation section of the IDL file. The release order list directs the SOM compiler to process the method definitions in the order specified in the list, as opposed to the order in the interface section. New methods should always be added to the end of the release order list to preserve compatibility with client applications. This allows you to describe the methods in the interface section in any order. In particular, new methods may be inserted in the middle of the existing methods without affecting client applications.