1 files changed, 5 insertions, 0 deletions
diff --git a/tests/pngxx.cpp b/tests/pngxx.cpp
index 27fe89c..731f470 100644
--- a/tests/pngxx.cpp
+++ b/tests/pngxx.cpp
@@ -94,10 +94,13 @@ main()
       }
     }
 
+    // Write the image to PNG
     Progress progress = writer.write_async();
     std::cout << "Writing PNG file: " << progress << std::endl;
   }
 
+  // Read the image back from PNG
+
   std::ifstream ifstr("dimensionxx1.png", std::ios::binary);
   PNG_Reader reader(ifstr);
 
@@ -105,6 +108,8 @@ main()
   std::cout << "Reading PNG file: " << iprogress << std::endl;
   Canvas canvas = PNG_Reader::finish(iprogress);
 
+  // And write it again
+
   std::ofstream ofstr("dimensionxx2.png", std::ios::binary);
   PNG_Writer writer(canvas, ofstr);