diff --git a/docs/PyRIC.pdf b/docs/PyRIC.pdf
index d60b93e..595bd35 100644
Binary files a/docs/PyRIC.pdf and b/docs/PyRIC.pdf differ
diff --git a/docs/PyRIC.tex b/docs/PyRIC.tex
index 9b1ae92..2ed874e 100644
--- a/docs/PyRIC.tex
+++ b/docs/PyRIC.tex
@@ -483,7 +483,7 @@ \subsection{Additional Tools}
 In the utils directory, PyRIC includes channels.py, hardware.py, rfkill.py and
 ouifetch.py. These provide a port of rfkill, channel/frequency enumeration and 
 device chipset, driver retrieval as well as some mac address functions. More 
-information can be found in the Appendices. 
+information can be found in the Appendices and in README.md. 
 
 \subsection{Interacting with the Kernel: libnl.py and libio.py}
 The kernel interfaces, libnl.py and libio.py are located in the lib directory.
@@ -741,6 +741,9 @@ \subsection{Functions}
 \item up(card,[iosock]) (ifconfig card.<dev> up), type: ioctl, bring card up
 \item down(card,[iosock]): (ifconfig card.<dev> down), type: ioctl, bring card 
 down
+\item block(card): (rfkill block <rfkill\_idx>) type: N/A, soft blocks card
+\item unblock(card): (rfkill unblock <rfkill\_idx>) type: N/A, removes the soft 
+block on card
 \item inetget(card,[iosock]): (ifconfig card.<dev>), type: ioctl, get ip4 address,
 netmask and broadcast address of card
 \item inetset(card,ipaddr,netmask,broadcast,[iosock]): (ifconfig card/<dev> <ipaddr>
@@ -837,8 +840,9 @@ \subsection{Functions}
 \item rf2ch(f): convert frequency f to channel
 \end{enumerate}
 
-\section{API: device.py}\label{sec:deviceapi}
-Retrieval of the driver and chipset of a given card is found in device.py.
+\section{API: hardware.py}\label{sec:deviceapi}
+Hardware related: driver, chipset, manufacturer and mac address utility functions 
+can be found in device.py.
 
 \subsection{Constants}
 \begin{enumerate}
@@ -848,11 +852,25 @@ \subsection{Constants}
 
 \subsection{Functions}
 \begin{enumerate}
+\item parseoui(path): reads and stores oui data from optional <path> into a dict
+\item oui(mac): returns the oui portion of address <mac>
+\item ulm(mac): returns the ulm portion of address <mac>
+\item manufacturer(ouis,mac): returns the manufacturer name of <mac> given the
+dict of <ouis>
+\item randhw(ouis): returns a random mac address given a dict of <ouis>
 \item ifcard(dev): returns the device driver and chipset
 \item ifdriver(dev): returns the device driver
 \item ifchipset(driver): returns the chipset associated with driver
 \end{enumerate}
 
+\section{API: ouifetch.py}
+The file ouifetch.py retrieves and saves a tab seperated file of oui to 
+manufacturer name for use by hardware.py functions. From a command line, type: \\
+
+\texttt{python ouifetch.py}\\
+
+Optional arguments path and verbose can also be specified.
+
 \section{API: rfkill.py}\label{sec:rfkillapi}
 A port of the command line tool rfkill, rfkill.py writes and reads rfkill\_event 
 structures to /dev/rfkill using fcntl provding functionality to block and unblock 
@@ -860,8 +878,8 @@ \section{API: rfkill.py}\label{sec:rfkillapi}
 
 \subsection{Constants}
 \begin{enumerate}
-\item \textbf{RFKILL\_TYPES}: list of strings corresponding to the types of devices
-supported by rfkill
+\item \textbf{RFKILL\_STATE}: list of boolean values corresponding to blocked, 
+unblocked
 \end{enumerate}
 
 \subsection{Functions}