file-level comments

diff --git a/dygraph-utils.js b/dygraph-utils.js
index 2d43d2d..b5521c4 100644 (file)
--- a/dygraph-utils.js
+++ b/dygraph-utils.js
@@ -1,4 +1,12 @@
+// Copyright 2011 Dan Vanderkam (danvdk@gmail.com)
+// All Rights Reserved.
 
+/**
+ * @fileoverview This file contains utility functions used by dygraphs. These
+ * are typically static (i.e. not related to any particular dygraph). Examples
+ * include date/time formatting functions, basic algorithms (e.g. binary
+ * search) and generic DOM-manipulation functions.
+ */
 
 Dygraph.LOG_SCALE = 10;
 Dygraph.LN_TEN = Math.log(Dygraph.LOG_SCALE);