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--- a/docs/architecture.rst
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@@ -1,13 +0,0 @@
-Architecture
-============
-
-``cryptography`` has three different layers:
-
-* ``cryptography``: This package contains higher level recipes, for example
-  "encrypt and then MAC". This is implemented on top of
-  ``cryptography.hazmat.primitives``.
-* ``cryptography.hazmat.primitives``: This packages contains low level
-  algorithms, things like ``AES`` or ``SHA1``. This is implemented on top of
-  ``cryptography.hazmat.backends``.
-* ``cryptography.hazmat.backends``: This package contains bindings to low level
-  cryptographic libraries. Our initial target is OpenSSL.
diff --git a/docs/index.rst b/docs/index.rst
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--- a/docs/index.rst
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@@ -43,7 +43,9 @@
 dangerous and can be used incorrectly. They require making decisions and having
 an in-depth knowledge of the cryptographic concepts at work. Because of the
 potential danger in working at this level, this is referred to as the
-"hazardous materials" or "hazmat" layer.
+"hazardous materials" or "hazmat" layer. These live in the
+``cryptography.hazmat`` package, and their documentation will always contain a
+admonition at the top.
 
 We recommend using the recipes layer whenever possible, and falling back to the
 hazmat layer only when necessary.
@@ -54,7 +56,6 @@
 .. toctree::
     :maxdepth: 2
 
-    architecture
     exceptions
     glossary