Tcl provides a portable scripting environment for Unix, Windows, and Macintosh that supports string processing and pattern matching, native file system access, shell-like control over other programs, TCP/IP networking, timers, and event-driven I/O. Tcl has traditional programming constructs like variables, loops, procedures, namespaces, error handling, script packages, and dynamic loading of DLLs. Tk provides portable GUIs on UNIX, Windows, and Macintosh. A powerful widget set and the concise scripting interface to Tk make it a breeze to develop sophisticated user interfaces.
License: BSD License (revised)
Changes:
New commands were added for supporting object oriented programming and providing script-level access to the stacked channels mechanism. [binary] is now a [namespace ensemble]. A new visual styles element engine was provided for Tk on Windows. Writing GIF images now uses real LZW compression.
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