diff -r 3cbce8bb28c3 -r 4560c5623d7d relpipe-data/examples-grep-fstab.xml
--- a/relpipe-data/examples-grep-fstab.xml	Sun May 09 19:43:32 2021 +0200
+++ b/relpipe-data/examples-grep-fstab.xml	Tue May 11 21:35:54 2021 +0200
@@ -14,7 +14,9 @@
 		</p>
 		
 		
-		<m:pre jazyk="bash"><![CDATA[relpipe-in-fstab | relpipe-tr-grep 'fstab' 'type' 'btrfs|xfs' | relpipe-out-tabular]]></m:pre>
+		<m:pre jazyk="bash"><![CDATA[relpipe-in-fstab \
+	| relpipe-tr-grep --relation 'fstab' --attribute 'type' --value 'btrfs|xfs' \
+	| relpipe-out-tabular]]></m:pre>
 				
 		<p>and we will get following filtered result:</p>
 		<pre><![CDATA[fstab: