--- a/acl.rst	Wed Jun 01 11:23:03 2016 +0300
+++ b/acl.rst	Wed Jun 01 11:24:05 2016 +0300
@@ -22,9 +22,10 @@
 
   $ sudo setfacl -x u:test ~/tmp/dir
 
-.. NOTE:: ``setfacl`` with ``-x`` key can't remove specific permission, you
-          should remove corresponding user or group and set new or explicitly
-          specify desired permission for user or group with ``-m`` option.
+.. NOTE:: ``setfacl`` with ``-x`` key can't remove specific permission (like
+          read/write/executable bit), you should remove corresponding user or
+          group and set new or explicitly specify desired permission for user or
+          group with ``-m`` option.
 
 Remove all ACL permissions::