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<!DOCTYPE html> <html lang='en'> <head> <meta charset='utf-8'> <meta name='viewport' content='width=device-width, initial-scale=1'> <meta name='description' content='Tclers wiki'> <meta name='author' content=''> <link rel='icon' href='/img/favicon.ico'> <title>Contents</title>  <link rel='stylesheet' href='https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css'> <link rel='stylesheet' href='/css/nikit.css' type='text/css'> <link rel='stylesheet' href='/css/sh_style.css' type='text/css'> <link rel='stylesheet' href='https://cdnjs.cloudflare.com/ajax/libs/jquery.tablesorter/2.31.0/css/theme.bootstrap_3.min.css' type='text/css'> <script src='//cdnjs.cloudflare.com/ajax/libs/clipboard.js/2.0.0/clipboard.min.js'></script> </head> <body onload='sh_highlightDocument(); nikitUser();'> <nav class='navbar navbar-fixed-top navbar-inverse'> <div class='container'> <div class='navbar-header'> <button type='button' class='navbar-toggle' data-toggle='collapse' data-target='#myNavbar'> 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navbar-right' method='post' action='/search' id='searchform'> <input name='Q' type='text' class='form-control' placeholder='Search...'/> <input type="hidden" name="sites" value="wiki.tcl-lang.org"/> </form> </div> </div> </nav> <div class='container'> <div class='row'> <div class='col-xs-12'> <h2>Contents</h2> </div> </div> <div class='row'> <div class='col-xs-12'> <div class='mkup_centered'><h2 id='800753bc739a1f49a06114dd02077792997f5c7a100f5f26ed4a3126f32a6cc5' class='mkup_h1'> Contents </h2></div><p class='mkup_p'>The contents of this wiki, organized to facilitate browsing by topic:</p><OL class='mkup_OL'><li class='mkup_li'>Introduction<OL class='mkup_OL'><li class='mkup_li'> <a class='mkup_a mkup_known' href='/page/What+is+Tcl'>What is Tcl</a></li><li class='mkup_li'> <a class='mkup_a mkup_known' href='/page/What+is+Tk'>What is Tk</a></li><li class='mkup_li'> <a class='mkup_a mkup_known' href='/page/Who+Uses+Tcl'>Who Uses Tcl</a></li><li class='mkup_li'> <a class='mkup_a mkup_known' href='/page/Getting+Tcl%2FTk'>Getting Tcl/Tk</a></li><li class='mkup_li'> <a class='mkup_a mkup_known' href='/page/Documentation'>Documentation</a></li><li class='mkup_li'> <a class='mkup_a mkup_known' href='/page/Getting+help'>Getting help</a></li><li class='mkup_li'> <a class='mkup_a mkup_known' href='/page/Installing+Tcl'>Installing Tcl</a></li><li class='mkup_li'> <a class='mkup_a mkup_known' href='/page/Tcl+Package+User+Guide'>Tcl Package User Guide</a></li><li class='mkup_li'> <a class='mkup_a mkup_known' href='/page/Extensions+for+Tcl+and+Tk'>Extensions for Tcl and Tk</a></li><li class='mkup_li'> <a class='mkup_a mkup_known' href='/page/Applications+%26+Development'>Applications & Development</a></li><li class='mkup_li'> <a class='mkup_a mkup_known' href='/page/Applications+in+Tcl+and+Tcl%2FTk'>Applications in Tcl and Tcl/Tk</a></li><li class='mkup_li'> <a class='mkup_a mkup_known' href='/page/Tcl%2FTk+games'>Tcl/Tk games</a></li><li class='mkup_li'> <a class='mkup_a mkup_known' href='/page/demo'>Demos</a></li><li class='mkup_li'> <a class='mkup_a mkup_known' href='/page/Tk+examples'>Tk examples</a></li><li class='mkup_li'> <a class='mkup_a mkup_known' href='/page/Beginning+Tcl'>Beginning Tcl</a></li><li class='mkup_li'> <a class='mkup_a mkup_known' href='/page/Tcl+Quoting'>Tcl Quoting</a></li><li class='mkup_li'> <a class='mkup_a mkup_known' href='/page/Learn+to+Program'>Learn to Program</a><OL class='mkup_OL'><li class='mkup_li'> <a class='mkup_a mkup_known' href='/page/Tips+for+writing+quality+software'>Tips for writing quality software</a></li><li class='mkup_li'> <a class='mkup_a mkup_known' href='/page/How+to+Write+Quality+Documentation'>How to Write Quality Documentation</a></li><li class='mkup_li'> <a class='mkup_a mkup_known' href='/page/testing'>Testing</a></li></OL></li><li class='mkup_li'> <a class='mkup_a mkup_known' href='/page/Tcl+Commands'>Tcl Commands</a></li><li class='mkup_li'> <a class='mkup_a mkup_known' href='/page/Advanced+Tcl'>Advanced Tcl</a></li><li class='mkup_li'> <a class='mkup_a mkup_known' href='/page/About+the+WIki'>About the WIki</a></li><li class='mkup_li'> <a class='mkup_a mkup_known' href='/page/How+do+Wiki+Categories+work'>How do Wiki Categories work</a></li><li class='mkup_li'> <a class='mkup_a mkup_known' href='/page/The+Tcl+Core'>The Tcl Core</a></li><li class='mkup_li'> <a class='mkup_a mkup_known' href='/page/Tcl+Developer+Guide'>Tcl Developer Guide</a></li><li class='mkup_li'> <a class='mkup_a mkup_known' href='/page/community'>Community</a></li></OL></li><li class='mkup_li'><a class='mkup_a mkup_known' href='/page/text+processing'>text</a><OL class='mkup_OL'><li class='mkup_li'> <a class='mkup_a mkup_known' href='/page/Parsing'>parsing</a></li></OL></li><li class='mkup_li'><a class='mkup_a mkup_known' href='/page/data'>data</a><OL class='mkup_OL'><li class='mkup_li'> <a class='mkup_a mkup_known' href='/page/data+format'>format</a></li><li class='mkup_li'> <a class='mkup_a mkup_known' href='/page/structured+data'>structured</a></li><li class='mkup_li'> <a class='mkup_a mkup_known' href='/page/data+structure'>structure</a></li></OL></li><li class='mkup_li'><a class='mkup_a mkup_known' href='/page/Statistics'>statistics</a><OL class='mkup_OL'><li class='mkup_li'> <a class='mkup_a mkup_known' href='/page/data+visualization'>data visualization</a></li></OL></li></OL> </div> </div> <div class='row'> <div class='col-xs-12'> <div class='Footer'>Updated 2023-08-18 08:30:48</div> </div> </div> </div>  <script src='https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js'></script> <script src='https://cdnjs.cloudflare.com/ajax/libs/jquery.tablesorter/2.31.0/js/jquery.tablesorter.combined.js'></script>  <script src='https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js'></script> <script type='text/javascript' src='/scripts/nikit.js'></script> <script type='text/javascript' src='/scripts/sh_main.js'></script> <script 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