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-rw-r--r--src/libextra/btree.rs5
1 files changed, 3 insertions, 2 deletions
diff --git a/src/libextra/btree.rs b/src/libextra/btree.rs
index e3382cb6c19..d650769d70f 100644
--- a/src/libextra/btree.rs
+++ b/src/libextra/btree.rs
@@ -10,8 +10,9 @@
 //
 // btree.rs
 //
-// starting implementation of a btree for rust
-// inspired by github user davidhalperin's gist
+
+//! Starting implementation of a btree for rust.
+//! Structure inspired by github user davidhalperin's gist.
 
 
 use std::util::replace;