>tk-var</a>. Can be set by <a href="settkvar.htm">set-tk-var!</a>.</dd>
    </dl>
  
    
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<p>Example:&#160;</p>

<pre>
(define r (tk 'create-widget 'radiobutton #:text 'radio))
(tk/pack r)
(r 'configure #:variable&#160;(tk-var "radio") #:value&#160;"One")
(set-tk-var! "radio" "One")
</pre>

<p>From now on, the radio-button should appear selected.</p>

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