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Practical Programming in Tcl & Tk, Third Edition
By Brent B. Welch

Table of Contents
Part VII.  Changes

Chapter 49. Tcl 7.5/Tk 4.1

Tk 4.1 is notable for its cross-platform support. Your Tk scripts can run on Windows, Macintosh, as well as UNIX. The associated Tcl release, 7.5, saw significant changes in event-driven I/O, network sockets, and multiple interpreters.

Cross-platform support, network sockets, multiple Tcl interpreters, and an enhanced foreach command are the highlights of Tcl 7.5 and Tk 4.1.

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