On the homepage the site title is camelcase so it is automatically set as a link.
If you want to make your wiki title a link to a tiddler you put something like this as the title (in the '
Title of this TiddlyWiki:' field of the control panel):
<$link to=TiddlerName>SiteTitle</$liknk>
where you replace 'TiddlerName' with the name of the tiddler you want to open and SiteTitle with whatever you want your site title to be.
If you want it to bring you to the home page of your wiki you would use:
<$button message='tm-home' class='tc-btn-invisible'>SiteTitle</$button>
where once again you change SiteTitle to whatever you want your wiki title to be
If you want it to bring you to an external link you use:
<a href='
http://someexternalurl.com'>SiteTitle</a>