diff --git a/hacks/README.md b/hacks/README.md
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+##### what's this?
+
+This contains examples of overriding classes inside the apk that you are launching,
+currently for the purposes of avoiding having to make stuff not crash that we don't even
+care about. (ideally we would figure out why it crashes and make sure it doesn't do that,
+but it's hard to motivate oneself to do that when the issue is with something that has no
+place being part of the app to begin with)
+
+##### how to apply the override?
+
+Currently, the way to apply an override is to use the `Makefile` to compile `classes3.dex`,
+and then to add this file to the `api-impl.jar`, making it part of bootclasspath.  
+If it's enough to have it be part of classpath, then adding support for specifying multiple
+classpath entries would also solve this issue; otherwise a way to specify additional
+bootclasspath entries would be needed.
diff --git a/hacks/ctr2/Makefile b/hacks/ctr2/Makefile
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+all:
+	javac -source 7 -target 7 -cp ../../*/src/api-impl/hax.jar com/google/android/youtube/player/*.java
+	dx --dex --output=classes3.dex com/google/android/youtube/player/*.class
+default:
+	all