diff --git a/README.mux b/README.mux
index 644b9747..74d86264 100644
--- a/README.mux
+++ b/README.mux
@@ -133,7 +133,7 @@ WebP files. This API currently supports reading of XMP/EXIF metadata, ICC
 profile and animated images. Other features may be added in subsequent
 releases.
 
-Code Example: Demuxing WebP data to extract all the frames, ICC profile
+Code example: Demuxing WebP data to extract all the frames, ICC profile
 and EXIF/XMP metadata.
 
   WebPDemuxer* demux = WebPDemux(&webp_data);
@@ -170,6 +170,30 @@ and EXIF/XMP metadata.
 For a detailed Demux API reference, please refer to the header file
 (src/webp/demux.h).
 
+AnimEncoder API:
+================
+The AnimEncoder API can be used to create animated WebP images.
+
+Code example:
+
+  WebPAnimEncoderOptions enc_options;
+  WebPAnimEncoderOptionsInit(&enc_options);
+  // ... (Tune 'enc_options' as needed).
+  WebPAnimEncoder* enc = WebPAnimEncoderNew(width, height, &enc_options);
+  while(<there are more frames>) {
+    WebPConfig config;
+    WebPConfigInit(&config);
+    // ... (Tune 'config' as needed).
+    WebPAnimEncoderAdd(enc, frame, duration, &config);
+  }
+  WebPAnimEncoderAssemble(enc, webp_data);
+  WebPAnimEncoderDelete(enc);
+  // ... (Write the 'webp_data' to a file, or re-mux it further).
+
+
+For a detailed AnimEncoder API reference, please refer to the header file
+(src/webp/mux.h).
+
 
 Bugs:
 =====
diff --git a/src/webp/mux.h b/src/webp/mux.h
index 40ae239f..5126ad5d 100644
--- a/src/webp/mux.h
+++ b/src/webp/mux.h
@@ -401,8 +401,12 @@ WEBP_EXTERN(WebPMuxError) WebPMuxAssemble(WebPMux* mux,
 /*
   WebPAnimEncoderOptions enc_options;
   WebPAnimEncoderOptionsInit(&enc_options);
+  // Tune 'enc_options' as needed.
   WebPAnimEncoder* enc = WebPAnimEncoderNew(width, height, &enc_options);
   while(<there are more frames>) {
+    WebPConfig config;
+    WebPConfigInit(&config);
+    // Tune 'config' as needed.
     WebPAnimEncoderAdd(enc, frame, duration, &config);
   }
   WebPAnimEncoderAssemble(enc, webp_data);