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diff --git a/tk8.6/library/demos/hello b/tk8.6/library/demos/hello
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+++ b/tk8.6/library/demos/hello
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+#!/bin/sh
+# the next line restarts using wish \
+exec wish "$0" ${1+"$@"}
+
+# hello --
+# Simple Tk script to create a button that prints "Hello, world".
+# Click on the button to terminate the program.
+
+package require Tk
+
+# The first line below creates the button, and the second line
+# asks the packer to shrink-wrap the application's main window
+# around the button.
+
+button .hello -text "Hello, world" -command {
+    puts stdout "Hello, world"; destroy .
+}
+pack .hello
+
+# Local Variables:
+# mode: tcl
+# End: