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% copyright 1984 by Arthur Keller ... All rights reserved
\chapter{Macros 1}

%Thu, August 23

%11am-12n
%Macros 1
%>state changing macros
%>scope

%1-2pm
%<lab assignment 10>

This lecture explains and reviews what we have learned about macros.

\section*{Assignment}

Reading for this lecture:
The {\sl \TeX book}, Chapter~20.

Assignment for this lecture:
You have been writing a lot of letters lately, and you are getting tired
of typing your address at the top of a letter.
Write a macro called \cmd{myaddress} that prints out each line of your
address centered on the page, like this:

\smallskip
\centerline{Dr.~No Fats}
\centerline{Reducing Medicine Department}
\centerline{Stanford University}
\centerline{Stanford, CA 94305 USA}
\smallskip

You just love your new \cmd{myaddress} macro, but you would like to use it to
    make a sheet of stick-on address labels for envelopes.  Write a 
    macro that prints your address 21 times on a page, with three columns 
    and seven rows. 
Each label should take up a space that is two inches wide and
one inch high.
The following page illustrates what the page of labels would look like.

\begin{figure}[p]

\newcommand{\sticker}{
   \vbox to 1in{
      \hbox to 2in{\hfil Dr.~No Fats\hfil}
      \hbox to 2in{\hfil Reducing Medicine Dept\hfil}
      \hbox to 2in{\hfil Stanford University\hfil}
      \hbox to 2in{\hfil Stanford, CA 94305 USA\hfil}
      \vfil
   }
}

\newcommand{\stickerline}{\hbox{\sticker\sticker\sticker}}

\vbox{
   \stickerline
   \stickerline
   \stickerline
   \stickerline
   \stickerline
   \stickerline
   \stickerline
}

\end{figure}