When the SOM Precompiler has been run successfully against a class definition file, it will produce all the source files necessary to build a Workplace Shell DLL. The most important of these files for the C programmer is the C source code file, which has an extension of .C. This file contains definitions and "function stubs" for all the methods defined by the class. This file must be edited by the programmer to add the actual application logic to each method. Figure "A SOM Precompiler-generated Function Stub" shows the SOM Precompiler-generated function stub for the QueryInfo method from the folder example.