--- a/relpipe-data/specification.xml	Mon Dec 10 00:14:28 2018 +0100
+++ b/relpipe-data/specification.xml	Mon Dec 10 18:24:52 2018 +0100
@@ -149,6 +149,23 @@
 			Errors (if any) are reported on STDERR.
 		</p>
 		
+		<h3>relpipe-tr-sed</h3>
+		
+		<p>
+			A tool that modifies attribute values according to given regular expression and replacement string.
+			Works with given relations and attributes only (others stay untouched).
+			Relation and attribute name are also specified as a regular expression.
+			Thus single <code>relpipe-tr-sed</code> run may modify multiple relations or attributes.
+		</p>
+		
+		<h3>relpipe-tr-grep</h3>
+		
+		<p>
+			A tool that drops records (does restriction) according to their match to given regular expression.
+			Relation and attribute name are also specified as a regular expression.
+			Thus single <code>relpipe-tr-grep</code> run may modify multiple relations or do match on multiple attributes.
+		</p>
+		
 	</text>
 
 </stránka>