The Core plugin
Most of fman's basic features, such as copying files, navigating to a folder
etc. are implemented in a plugin called Core. fman "eats
its own dog food" in this way to ensure that the
plugin API is stable and powerful
enough for real world use.
The source code of the Core plugin can be found in your fman
installation directory. Its exact path depends on your operating system:
If you want to write your own plugins, it is highly recommended you take a
look at the above sources. They show exactly how each API function is meant
to be used.