Manual.rst: Example on how to reuse custom vars defined in `config.qfq.ini`

extension/Documentation/Manual.rst

@@ -124,7 +124,7 @@ Typoscript code to implement a print link on every page::
 
 	10 = TEXT
 	10 {
-		wrap = <a href="typo3conf/ext/qfq/qfq/api/print.php?id=...|&type=2"><span class="glyphicon glyphicon-print" aria-hidden="true"></span> Printview</a>
+		wrap = <a href="typo3conf/ext/qfq/qfq/api/print.php?id=|&type=2"><span class="glyphicon glyphicon-print" aria-hidden="true"></span> Printview</a>
 		data = page:uid
 	}
 
@@ -3933,6 +3933,9 @@ Example `_pdf`, `_zip`: ::
 
 ..
 
+Use the `--print-media-type` as wkthml option to access the page with media type 'printer'. Depending on the website
+configuration this switches off navigation and background images.
+
 Export area
 '''''''''''