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...The C++/Tcl library offers the following features:
Support for both extending Tcl with C++ modules and embedding Tcl in C++ applications.
Possibility to expose free C++ functions as commands in Tcl.
Possibility to define classes and class member functions, visible in Tcl in the style similar to SWIG wrappers.
Possibility to manipulate Tcl lists and objects from the C++ code.