The Command option on the main menu widow provides an interface for executing tcl commands or sourcing *.tcl files. To enter a tcl command, click the left mouse button in the field next to the Command option, enter the parameter name and value(s), then press Enter on the keyboard to register the parameter in the database. Once registered, the name and value(s) of the parameter are displayed above the Command line. Note that the code parameters, which may be entered as commands, are typically defined using the pset command. To exit the Command Control panel, click Dismiss.