This URI can be any acceptable location which a browser can open. For example:
X_TclTalkback_URI: http://www.example.com/moreinfo/10234/ X_TclTalkback_URI: https://www.example.com/bugs.cgi?view=20 X_TclTalkback_URI: ftp://www.example.com/pub/docs/2007-045.pdf
TclTalkback will then open this URL on the user's browser.
Where this header has not been set, TclTalkback will use any content from the HTTP page as the content of a text-format informational dialog.
Alternately, you can override this behaviour by using ::tcltalkback::Settings -finishinfo text.
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