Standardise on sentence case for titles
diff --git a/docs/development/custom-vectors/cast5.rst b/docs/development/custom-vectors/cast5.rst
index f540027..98c5ba7 100644
--- a/docs/development/custom-vectors/cast5.rst
+++ b/docs/development/custom-vectors/cast5.rst
@@ -1,4 +1,4 @@
-CAST5 Vector Creation
+CAST5 vector creation
=====================
This page documents the code that was used to generate the CAST5 CBC, CFB, OFB,
diff --git a/docs/development/custom-vectors/idea.rst b/docs/development/custom-vectors/idea.rst
index 68c00b8..e0db58d 100644
--- a/docs/development/custom-vectors/idea.rst
+++ b/docs/development/custom-vectors/idea.rst
@@ -1,4 +1,4 @@
-IDEA Vector Creation
+IDEA vector creation
=====================
This page documents the code that was used to generate the IDEA CBC, CFB, and
diff --git a/docs/development/getting-started.rst b/docs/development/getting-started.rst
index 412f054..3d9012e 100644
--- a/docs/development/getting-started.rst
+++ b/docs/development/getting-started.rst
@@ -1,4 +1,4 @@
-Getting Started
+Getting started
===============
Working on ``cryptography`` requires the installation of a small number of
@@ -14,7 +14,7 @@
You are now ready to run the tests and build the documentation.
-Running Tests
+Running tests
~~~~~~~~~~~~~
``cryptography`` unit tests are found in the ``tests/`` directory and are
@@ -49,7 +49,7 @@
will see one or more ``InterpreterNotFound`` errors.
-Explicit Backend Selection
+Explicit backend selection
~~~~~~~~~~~~~~~~~~~~~~~~~~
While testing you may want to run tests against a subset of the backends that
@@ -63,7 +63,7 @@
$ tox -- --backend=openssl
$ py.test --backend=openssl,commoncrypto
-Building Documentation
+Building documentation
~~~~~~~~~~~~~~~~~~~~~~
``cryptography`` documentation is stored in the ``docs/`` directory. It is
diff --git a/docs/development/reviewing-patches.rst b/docs/development/reviewing-patches.rst
index 302c998..9147a73 100644
--- a/docs/development/reviewing-patches.rst
+++ b/docs/development/reviewing-patches.rst
@@ -1,4 +1,4 @@
-Reviewing/Merging Patches
+Reviewing/merging patches
=========================
Everyone is encouraged to review open pull requests. When reviewing a patch try
@@ -32,7 +32,7 @@
* Does a variable need a better name?
* Should this be a keyword argument?
-Merge Requirements
+Merge requirements
------------------
Because cryptography is so complex, and the implications of getting it wrong so
diff --git a/docs/development/submitting-patches.rst b/docs/development/submitting-patches.rst
index 1797b9c..f1bf954 100644
--- a/docs/development/submitting-patches.rst
+++ b/docs/development/submitting-patches.rst
@@ -1,4 +1,4 @@
-Submitting Patches
+Submitting patches
==================
* Always make a new branch for your work.
@@ -29,7 +29,7 @@
from __future__ import absolute_import, division, print_function
-API Considerations
+API considerations
~~~~~~~~~~~~~~~~~~
Most projects' APIs are designed with a philosophy of "make easy things easy,
diff --git a/docs/development/test-vectors.rst b/docs/development/test-vectors.rst
index 1d76817..164d0ab 100644
--- a/docs/development/test-vectors.rst
+++ b/docs/development/test-vectors.rst
@@ -1,4 +1,4 @@
-Test Vectors
+Test vectors
============
Testing the correctness of the primitives implemented in each ``cryptography``
@@ -10,7 +10,7 @@
Sources
-------
-Asymmetric Ciphers
+Asymmetric ciphers
~~~~~~~~~~~~~~~~~~
* RSA PKCS #1 from the RSA FTP site (ftp://ftp.rsasecurity.com/pub/pkcs/pkcs-1/
@@ -43,7 +43,7 @@
* HMAC-RIPEMD160 from :rfc:`2286`.
* HMAC-SHA2 (224, 256, 384, 512) from :rfc:`4231`.
-Key Derivation Functions
+Key derivation functions
~~~~~~~~~~~~~~~~~~~~~~~~
* HKDF (SHA1, SHA256) from :rfc:`5869`.
@@ -55,7 +55,7 @@
* Fernet from its `specification repository`_.
-Symmetric Ciphers
+Symmetric ciphers
~~~~~~~~~~~~~~~~~
* AES (CBC, CFB, ECB, GCM, OFB) from `NIST CAVP`_.
@@ -72,14 +72,14 @@
* IDEA (CBC, CFB, OFB) generated by this project.
See: :doc:`/development/custom-vectors/idea`
-Two Factor Authentication
+Two factor authentication
~~~~~~~~~~~~~~~~~~~~~~~~~
* HOTP from :rfc:`4226`
* TOTP from :rfc:`6238` (Note that an `errata`_ for the test vectors in RFC
6238 exists)
-Creating Test Vectors
+Creating test vectors
---------------------
When official vectors are unavailable ``cryptography`` may choose to build