"Everything is customizable."
In this case, that's actually a Swiki! The "default" swiki. So if you peek
in your swiki folder, there'll be a folder named "default". Then go into
"templates" and there's a template called "list.book". It contains, among
other things, the following text:
----
<h2>Swikis on this Site</h2>
<?swikis?>
<a href="http://minnow.cc.gatech.edu/swiki"><img border=0 alt="Powered by
Comanche" src="<?tofiles?>comanche.gif"></a><br>
<i>Comanche 4.5 / Swiki 9</i>
----
The '<?swikis?>' is an action which, as you wrote, is dynamically
generated. You could replace it with hard-coded text, or edit the action
to do something else.
(For example, you might want to filter the swikis so only specific one's
are shown. Go to the actions folder and change swikis.book appropriately.)
Hope this helps,
Bijan.