--- a/slideshow.tex	Sat Jan 12 01:05:57 2008 -0500
+++ b/slideshow.tex	Sat Jan 12 01:56:40 2008 -0500
@@ -11,43 +11,70 @@
 \begin{document}
 \maketitle
 
-% What is zArch?
+%%% What is zArch?
 \overlays{9}{
 \begin{slide}{What's zArchitecture?}
+%% Let's start with a very simple question. What is zArchitecture?
+%% As people say, a picture is worth a thousand words, so I've got a picture
+%% for you...
 	\onlySlide*{2}{\begin{center}\includegraphics{syszfamily.eps}\end{center}}
+%% This is a System z mainframe made by IBM. As you might have guessed from
+%% the name, it uses the zArchitecture.
 	\fromSlide*{3}{
 	\begin{itemize}
 		\item IBM System z mainframes (2006)
+%% In 2006 IBM's marketing decided to spruce things up a bit, and to rename
+%% their mainframe line...
 		\fromSlide*{4}{\item formerly zSeries (2000)}
+%% zArchitecture was first used by zSeries mainframes all the way back in
+%% 2000. The zArchitecture in general is a descendent of...
 		\fromSlide*{5}{\item Descendent of ESA/390 (1990)}
+%% ESA/390...which was a descendent of...
 		\fromSlide*{6}{\item Descendent of ESA/370 (1988)}
+%% ESA/370...which was a descendent of...
 		\fromSlide*{7}{\item Descendent of S/370-XA (1983)}
+%% S/370-XA...which was a descendent of...
 		\fromSlide*{8}{\item Descendent of System/370 (1972)}
+%% System/370...which was a descendent of...
 		\fromSlide*{9}{\item Descendent of System/360 (1964)}
+%% System/360. The beautiful thing about the whole series of architectures
+%% is the fact that a user application written and _compiled_ in 1964 can
+%% run unmodified on the latest IBM mainframe.
 	\end{itemize}
 	}
 \end{slide}}
 
-% Aren't mainframes dead? --- NO!
-%
-% I said that you'd hear a dozen things...this one is your freebie; baker's
-% dozen? :)
+%%% Aren't mainframes dead?
 \overlays{3}{
 \begin{slide}{0. Aren't mainframes dead?}
+%% I've hear a number of people tell me that they thought that mainframes
+%% were dead. Well...
 	\fromSlide*{2}{
 	\vspace{1in}
 	\begin{center}
 		\Huge No!\normalsize
+%% No! Mainframes are not dead. They just happen to be overshadowed by the
+%% sheer volume of desktops, laptops, and servers sold. Mainframes have a
+%% very specific design goal - they are NOT the fastest computers out there,
+%% they are NOT the computers with most cores, or memory; they are meant to
+%% run 24/7 and have 100% availability. With careful planning, you can even
+%% update the hardware without losing your "internet presence."
 		\vspace{1cm}
 
 		\fromSlide*{3}{Ok, this one was a freebie...}
+%% I said that you'd hear a dozen things...this one was too easy to count,
+%% so let's count it as a freebie - let's make the presentation a baker's
+%% dozen of things about zArch.
+%%
+%% With that said, let's move onto the core of the presentation...
 	\end{center}
 	}
 \end{slide}}
 
-% 1) channel subsystem - don't load up the CPU with unnecessary cruft
+%%% Channels
 \overlays{1}{
 \begin{slide}{1. Channels}
+% 1) channel subsystem - don't load up the CPU with unnecessary cruft
 	\begin{itemize}
 		\item CPUs are meant to run user code
 		\item Start and IO operation on a CPU