From d25438bdf044a18e7326841affe1217b37c7e189 Mon Sep 17 00:00:00 2001
From: Miao Jiang <jiangfriend@gmail.com>
Date: Tue, 19 Feb 2013 17:31:59 +0800
Subject: [PATCH] Add comments.

---
 lib/Curl.toffee | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/Curl.toffee b/lib/Curl.toffee
index 3fc45ed..246975f 100644
--- a/lib/Curl.toffee
+++ b/lib/Curl.toffee
@@ -39,13 +39,17 @@ Curl.user_options =
   RAW: 'RAW'
   DEBUG: 'DEBUG'
 
+# on 'data' must be returns the chunk length
 Curl::on = (event, callback) ->
   switch event
     when 'data'
+      # (Buffer chunk) ->
       @on_write = callback
     when 'error'
+      # (Error error) ->
       @on_error = callback
     when 'end'
+      # () ->
       @on_end = callback
     else
       throw new Error("invalid event type #{event}")