From 81eab1cab6e96b4430409245b83cc51cd40c2f9f Mon Sep 17 00:00:00 2001
From: Niko Matsakis <niko@alum.mit.edu>
Date: Fri, 21 Aug 2015 15:34:10 -0400
Subject: [PATCH] completely aborted comment

---
 src/librustc/middle/free_region.rs | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/librustc/middle/free_region.rs b/src/librustc/middle/free_region.rs
index 33aec3e1f83a..744ceb3701db 100644
--- a/src/librustc/middle/free_region.rs
+++ b/src/librustc/middle/free_region.rs
@@ -8,7 +8,12 @@
 // option. This file may not be copied, modified, or distributed
 // except according to those terms.
 
-//! This file defines
+//! This file handles the relationships between free regions --
+//! meaning lifetime parameters. Ordinarily, free regions are
+//! unrelated to one another, but they can be related vai implied or
+//! explicit bounds.  In that case, we track the bounds using the
+//! `TransitiveRelation` type and use that to decide when one free
+//! region outlives another and so forth.
 
 use middle::ty::{self, FreeRegion, Region};
 use middle::wf::ImpliedBound;