Predicates for Prolog to Interact with Tcl Interpreters

tcl_new(-TclInterpreter): Create a Tcl interpreter and return a handle to it in the variable Interpreter.
tcl_delete(+TclInterpreter): Given a handle to a Tcl interpreter in variable TclInterpreter, it deletes the interpreter from the system.
tcl_eval(+TclInterp, +Command, -Result): Evaluates the Tcl command term given in Command in the Tcl interpreter handle provided in TclInterpreter. The result of the evaluation is returned as a string in Result.
tcl_event(+TclInterp, +Command, -Events): Evaluates the Tcl command term given in Command in the Tcl interpreter handle provided in TclInterpreter. The first Prolog events arising from the evaluation is returned as a list in Events. Blocks until there is something on the event queue.