A. Installing Tcl and Tk

The source code and reference documentation for Tcl and Tk are freely available. Tcl and Tk are available under a BSD-style license, which provides great flexibility, including the use of Tcl and Tk in commercial products without royalties or being required to open-source your own code. This appendix describes different methods for retrieving the Tcl and Tk distributions for use on your local system.

A.1 Versions

Tcl and Tk are distributed separately, and each distribution has a version number. A version number consists of two or more integers separated by a period, such as 8.5.3 or 8.4. The first of the numbers is the major version number and the second is the minor version number. A third number, if present, indicates ...

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