\input color

\definecolor{darkgreen}{rgb}{0,0.8,0}
\definecolor{lightgreen}{rgb}{0.624,0.878,0.624}
\definecolor{green}{rgb}{0,0.5,0}

\pagecolor{darkgreen} %
\color{black} %text color

\def\colo{\vbox to \vsize\begingroup\fcolorbox{lightgreen}{black}}
\def\endcolo{\endgroup}

\newbox\contents
\newbox\curbox
\def\getcontents height #1 width #2{%#1 is height, #2 is width; returns that much of the \contents box
  {%
    \hsize=#2\relax
    \setbox\curbox=\vsplit\contents to #1
    \box\curbox
  }
}
\def\appendcontents #1{%appends a vbox to contents
  \setbox\contents={\box\contents\box#1}
}
\pdfpageheight=36in
\pdfpagewidth=48in
\hsize=11in
\vsize=32in
\nopagenumbers

%gives ''\newfont myfont=cmr10@14pt''
\newcount\spacing
\newdimen\size
\def\adjs{%adjust spacing
  \baselineskip=\size \multiply\baselineskip by \spacing \divide\baselineskip by 100 \multiply\baselineskip by 6 \divide\baselineskip by 5%6/5 = normal 1.2 addition for character depth
}
\def\newfont#1=#2@#3pt{%name, base, size
  \expandafter\font\csname x#1\endcsname=#2 at #3pt
  \expandafter\edef\csname #1\endcsname{\size=#3pt \adjs \csname x#1\endcsname}
}

% font definitions
\newfont title=cmb10@48pt
\newfont text=cmr10@12pt
\newfont head=cmb10@24pt
\spacing=120

% sectioning
\def\section#1{
  \centerline{
    \fcolorbox{green}{black}%
    \head #1%
  }
}

\def\include#1;#2\par{
  \section{#1}
  \input #2\relax
}