Wish (Unix shell)
codice_1 (Windowing Shell) is a Tcl interpreter extended with Tk commands, available for Unix-like operating systems supporting the X Window System, as well as macOS, Microsoft Windows, and Android. It provides developers the ability to create GUI widgets using the Tk toolkit and the Tcl programming language. codice_1 is open-source under the BSD License, and is currently part of the Tcl/Tk programming suite. Usage. codice_1 can be run without parameters. Then the codice_4 prompt is displayed and the interpreter awaits for commands entered interactively by the user. An empty window is opened in which  the widgets created by user commands are displayed. This mode is suitable for experimenting. More often codice_1 is run with a name of a file containing a Tcl/Tk script as a parameter. It is also possible to run directly Tcl/Tk scripts; in Unix using the shebang construction; in Windows by associating the codice_6 extension with the wish program.