The affinity tool is not a "traditional" widget. But it is nevertheless a widget. It just makes fewer page layout decisions which are hard-coded. If you want to shrink it down and put it on the sidebar in your theme, go for it.

boot.php

@@ -1883,7 +1883,8 @@ function construct_page(&$a) {
 					$v = str_replace('$nav',$a->page['nav'],$v);
 				}
 				if(strpos($v,'$content') !== false) {
-					$v = str_replace('$content',$a->page['section'],$v);
+
+					$v = str_replace('$content',$a->page['content'],$v);
 				}
 
 				$a->page[substr($k,7)] = $v;