Other Source Files

In addition to the Metaproxy source files that define the classes described above, there are a few additional files which are briefly described here:

metaproxy_prog.cpp: The main function of the metaproxy program.
ex_router_flexml.cpp: Identical to metaproxy_prog.cpp: it's not clear why.
test_*.cpp: Unit-tests for various modules.

### Still to be described: ex_filter_frontend_net.cpp, filter_dl.cpp, plainfile.cpp, tstdl.cpp.