The prolog section of the implementation file includes header files for all the related classes. You can add additional #include files using the C_ and CPP::Class/Package::ImpIncludes property. See the definition provided for the property on the applicable Properties tab of the Features window.
You can wrap sections of code with #ifdef #endif directives, add compiler-specific keywords, and add #pragma directives using prolog and epilog properties. For more information, see Wrapping code with #ifdef-#endif.
The following code shows a sample prolog section:
//## package package//## class class#include "class.h" #include <package.h> #include <rclass1.h> #include <rclass2.h> //------------------------------------------------------- // class.cpp //------------------------------------------------------- DECLARE_META_PACKAGE(Default) #define op1_SERIALIZE