Rascal can be extended and modified using modules that are being compiled
into the executable. Each module may define new data types that correspond
to C structures or C++ classes as well as operators, functions and
procedures that use the defined data types. Due to the versatile approach
existing libraries can easily be included into Rascal as new modules, and
the end-user may use them in a convenient way.

To see which modules are included in this version of Rascal, enter the
command 'modules' at the prompt:

   >modules
   taylor
   generic
   [...]