I don't have the spec but I recommend Olivier Couvreur's CCF DLL which is in the files section:
[Link: remotecentral.com](Link to the DLL is in the description for CCF Decompiler & Compiler)
Using this you can decompile the CCF file to an easy to use text format, make your changes and then recompile back again.
If you're using a language that can't easily use DLLs directly you could do this a bit messier by calling Olivier's decompiler and compiler programs.
Let me know by email if you'd like a C++ class which wraps the DLL, although it's all quite straighforward from Olivier's example C program in the archive.