From cf9e85bb4348e06e5f701d77620f64ad7c4fc85a Mon Sep 17 00:00:00 2001
From: Simon Danisch <sdanisch@gmail.com>
Date: Tue, 6 Oct 2015 21:57:15 +0200
Subject: [PATCH] add comment

---
 src/ImageMagick.jl | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/ImageMagick.jl b/src/ImageMagick.jl
index 8d6ee53..ccfa3d9 100644
--- a/src/ImageMagick.jl
+++ b/src/ImageMagick.jl
@@ -22,6 +22,7 @@ export setimagecompressionquality
 export setimageformat
 export writeimage
 export image2wand
+export writemime_
 
 include("libmagickwand.jl")
 
@@ -240,11 +241,13 @@ end
 
 permutedims_horizontal(img) = permutedims(img, permutation_horizontal(img))
 
+#lower level writemime. Writes the png format into an IO buffer
+#gets called by writemime in images.
 function writemime_(io::IO, ::MIME"image/png", img::AbstractImage)
     wand = image2wand(img, Images.mapinfo_writemime(img), nothing)
     blob = getblob(wand, "png")
     write(io, blob)
 end
-export writemime_
+
 
 end # module