diff --git a/how_to b/how_to
index 112c2f7..b65082c 100644
--- a/how_to
+++ b/how_to
@@ -117,8 +117,11 @@ MTP :
 
 PDF :
     AUR -> pdftk :
-        merge pdf :
+        Merge pdf :
             pdftk input1.pdf input2.pdf input3.pdf cat output output.pdf
+	Extract pages :
+            pdftk input.pdf cat <range> output out.pdf
+            # range can be <start>-<end>, more info at pdftk --help
 
 D-Bus :
     To reload service files /usr/share/dbus-1/services/