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

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wish

The wish shell no longer requires a -file (or -f) argument, so you can drop this from your script header lines. This flag is still valid, but no longer necessary.

The class name of the application is set from the name of the script file instead of always being Tk. If the script is /usr/local/bin/foobar, then the class is set to Foobar, for example.

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