diff -r 6383a4457833 -r 627ff99d475b relpipe-data/specification.xml
--- a/relpipe-data/specification.xml	Fri Jan 18 00:35:43 2019 +0100
+++ b/relpipe-data/specification.xml	Fri Jan 18 00:39:51 2019 +0100
@@ -129,6 +129,15 @@
 			In future <m:name/> releases, there will be also an SQL transformation tool, where these operations will be defined in classic SQL syntax.
 		</p>
 		
+		<h3>relpipe-in-filesystem</h3>
+		
+		<p>
+			A tool that reads <code>\0</code> separated list of file paths and generates relation
+			with metadata of given files.
+			Can read basic metadata like file path, name, size, owner…
+			and also extended attributes (xattr).
+		</p>
+		
 		<h3>relpipe-out-tabular</h3>
 		
 		<p>