Index: reviewing-diffs.txt
===================================================================
--- reviewing-diffs.txt	(revision 2097)
+++ reviewing-diffs.txt	(working copy)
@@ -27,11 +27,19 @@
 Commenting on Lines
 ===================
 
-To comment on a line on a diff, simply click the line number, or click and
-drag down to select multiple lines. A comment dialog will appear giving you
-a text entry for writing your comment. When you're done, you can click
+To comment on a line on a diff, simply click the line number. A
+comment dialog will appear giving you a text entry for writing your
+comment. When you're done, you can click
 :guilabel:`Save` to save the comment.
 
+Furthermore you can assign a comment to multiple code lines. This
+option is especially useful to provide additional code context to
+discussions as all commented code will appear on the review request
+page.
+To create a multiple line comment go to the line number column and
+hold down the mouse to mark multiple lines. Do not exit the line
+number column while marking the lines. 
+
 .. image:: comment-box.png
 
 After saving a comment, a green comment flag will appear next to the first