diff --git a/docs/VLSI/HAMMER.rst b/docs/VLSI/HAMMER.rst
index a206fe93..ffd880be 100644
--- a/docs/VLSI/HAMMER.rst
+++ b/docs/VLSI/HAMMER.rst
@@ -1,7 +1,40 @@
-HAMMER
+Core HAMMER
 ================================
 
 `HAMMER <https://github.com/ucb-bar/hammer>`__ is a physical design generator that wraps around vendor specific technologies and tools to provide a single API to create ASICs.
 HAMMER allows for reusability in ASIC design while still providing the designers leeway to make their own modifications.
 
 For more information, read the `HAMMER paper <https://people.eecs.berkeley.edu/~edwardw/pubs/hammer-woset-2018.pdf>`__ and see the `GitHub repository <https://github.com/ucb-bar/hammer>`__.
+
+Actions
+-------
+
+Actions are the top-level tasks Hammer is capable of executing (e.g. synthesis, place-and-route, etc.)
+
+Steps
+-------
+
+Steps are the sub-components of actions that individually addressable in Hammer (e.g. placement in the place-and-route action).
+
+Hooks
+-------
+
+Hooks are modifications to steps or actions that are programmaticly defined in a Hammer configuration.
+
+Tool Plugins
+============
+
+Hammer supports separatly managed plugins for different CAD tool vendors.
+
+Technology Plugins
+==================
+
+Hammer supports separately managed plugins for different technologies.
+
+
+Configuration
+=============
+
+To configure a hammer flow the user needs to supply a yaml or json configuration file the chooses the tool and technology plugins and versions as well as any design specific configuration APIs.
+
+You can see the current set of all avaialable Hammer APIs `here <https://github.com/ucb-bar/hammer/blob/master/src/hammer-vlsi/defaults.yml>`.
diff --git a/docs/VLSI/index.rst b/docs/VLSI/index.rst
index 464d9828..259966d8 100644
--- a/docs/VLSI/index.rst
+++ b/docs/VLSI/index.rst
@@ -1,11 +1,11 @@
-VLSI Production
+VLSI Flow
 ================================
 
-The Chipyard framework aim to provide wrappers to a general VLSI flow.
-In particular, we aim to support the HAMMER flow.
+The Chipyard framework aims to provide wrappers for a general VLSI flow.
+In particular, we aim to support the HAMMER physical deisgn generator flow.
 
 .. toctree::
    :maxdepth: 2
-   :caption: VLSI Production:
+   :caption: VLSI Flow:
 
    HAMMER