\documentclass[10pt,a4paper]{article}

% Packages
\usepackage{fancyhdr}           % For header and footer
\usepackage{multicol}           % Allows multicols in tables
\usepackage{tabularx}           % Intelligent column widths
\usepackage{tabulary}           % Used in header and footer
\usepackage{hhline}             % Border under tables
\usepackage{graphicx}           % For images
\usepackage{xcolor}             % For hex colours
%\usepackage[utf8x]{inputenc}    % For unicode character support
\usepackage[T1]{fontenc}        % Without this we get weird character replacements
\usepackage{colortbl}           % For coloured tables
\usepackage{setspace}           % For line height
\usepackage{lastpage}           % Needed for total page number
\usepackage{seqsplit}           % Splits long words.
%\usepackage{opensans}          % Can't make this work so far. Shame. Would be lovely.
\usepackage[normalem]{ulem}     % For underlining links
% Most of the following are not required for the majority
% of cheat sheets but are needed for some symbol support.
\usepackage{amsmath}            % Symbols
\usepackage{MnSymbol}           % Symbols
\usepackage{wasysym}            % Symbols
%\usepackage[english,german,french,spanish,italian]{babel}              % Languages

% Document Info
\author{br0p0p}
\pdfinfo{
  /Title (rexx-scripting-language.pdf)
  /Creator (Cheatography)
  /Author (br0p0p)
  /Subject (REXX Scripting Language Cheat Sheet)
}

% Lengths and widths
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\addtolength{\textheight}{-1cm}
\addtolength{\hoffset}{-3cm}
\addtolength{\voffset}{-2cm}
\setlength{\tabcolsep}{0.2cm} % Space between columns
\setlength{\headsep}{-12pt} % Reduce space between header and content
\setlength{\headheight}{85pt} % If less, LaTeX automatically increases it
\renewcommand{\footrulewidth}{0pt} % Remove footer line
\renewcommand{\headrulewidth}{0pt} % Remove header line
\renewcommand{\seqinsert}{\ifmmode\allowbreak\else\-\fi} % Hyphens in seqsplit
% This two commands together give roughly
% the right line height in the tables
\renewcommand{\arraystretch}{1.3}
\onehalfspacing

% Commands
\newcommand{\SetRowColor}[1]{\noalign{\gdef\RowColorName{#1}}\rowcolor{\RowColorName}} % Shortcut for row colour
\newcommand{\mymulticolumn}[3]{\multicolumn{#1}{>{\columncolor{\RowColorName}}#2}{#3}} % For coloured multi-cols
\newcolumntype{x}[1]{>{\raggedright}p{#1}} % New column types for ragged-right paragraph columns
\newcommand{\tn}{\tabularnewline} % Required as custom column type in use

% Font and Colours
\definecolor{HeadBackground}{HTML}{333333}
\definecolor{FootBackground}{HTML}{666666}
\definecolor{TextColor}{HTML}{333333}
\definecolor{DarkBackground}{HTML}{DC1010}
\definecolor{LightBackground}{HTML}{FCF0F0}
\renewcommand{\familydefault}{\sfdefault}
\color{TextColor}

% Header and Footer
\pagestyle{fancy}
\fancyhead{} % Set header to blank
\fancyfoot{} % Set footer to blank
\fancyhead[L]{
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{C}
    \SetRowColor{DarkBackground}
    \vspace{-7pt}
    {\parbox{\dimexpr\textwidth-2\fboxsep\relax}{\noindent
        \hspace*{-6pt}\includegraphics[width=5.8cm]{/web/www.cheatography.com/public/images/cheatography_logo.pdf}}
    }
\end{tabulary}
\columnbreak
\begin{tabulary}{11cm}{L}
    \vspace{-2pt}\large{\bf{\textcolor{DarkBackground}{\textrm{REXX Scripting Language Cheat Sheet}}}} \\
    \normalsize{by \textcolor{DarkBackground}{br0p0p} via \textcolor{DarkBackground}{\uline{cheatography.com/6770/cs/1106/}}}
\end{tabulary}
\end{multicols}}

\fancyfoot[L]{ \footnotesize
\noindent
\begin{multicols}{3}
\begin{tabulary}{5.8cm}{LL}
  \SetRowColor{FootBackground}
  \mymulticolumn{2}{p{5.377cm}}{\bf\textcolor{white}{Cheatographer}}  \\
  \vspace{-2pt}br0p0p \\
  \uline{cheatography.com/br0p0p} \\
  \end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Cheat Sheet}}  \\
   \vspace{-2pt}Not Yet Published.\\
   Updated 13th May, 2016.\\
   Page {\thepage} of \pageref{LastPage}.
\end{tabulary}
\vfill
\columnbreak
\begin{tabulary}{5.8cm}{L}
  \SetRowColor{FootBackground}
  \mymulticolumn{1}{p{5.377cm}}{\bf\textcolor{white}{Sponsor}}  \\
  \SetRowColor{white}
  \vspace{-5pt}
  %\includegraphics[width=48px,height=48px]{dave.jpeg}
  Measure your website readability!\\
  www.readability-score.com
\end{tabulary}
\end{multicols}}




\begin{document}
\raggedright
\raggedcolumns

% Set font size to small. Switch to any value
% from this page to resize cheat sheet text:
% www.emerson.emory.edu/services/latex/latex_169.html
\footnotesize % Small font.

\begin{multicols*}{3}

\begin{tabularx}{5.377cm}{X}
\SetRowColor{DarkBackground}
\mymulticolumn{1}{x{5.377cm}}{\bf\textcolor{white}{REXX Language Logo}}  \tn
\SetRowColor{LightBackground}
\mymulticolumn{1}{p{5.377cm}}{\vspace{1px}\centerline{\includegraphics[width=5.1cm]{/web/www.cheatography.com/public/uploads/br0p0p_1371227387_Rexx-img-lg[1].png}}} \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\SetRowColor{LightBackground}
\mymulticolumn{1}{x{5.377cm}}{This cheat sheet was made with information gathered from IBM's VSE/REXX Reference 6.1.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}-}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{1.09494 cm} x{3.88206 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Arithmetic Operators}}  \tn
% Row 0
\SetRowColor{LightBackground}
+ & Add \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
- & Subtract \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
* & Multiply \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
/ & Divide \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\% & Integer Divide \tn 
% Row Count 5 (+ 1)
% Row 5
\SetRowColor{white}
// & Remainder (not modulo) \tn 
% Row Count 6 (+ 1)
% Row 6
\SetRowColor{LightBackground}
** & Power (raise to whole-number) \tn 
% Row Count 7 (+ 1)
% Row 7
\SetRowColor{white}
Prefix - & Same as: {\emph{0 - number}} \tn 
% Row Count 8 (+ 1)
% Row 8
\SetRowColor{LightBackground}
Prefix + & Same as: {\emph{0 + number}} \tn 
% Row Count 9 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{0.84609 cm} x{4.13091 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Comparison Operators}}  \tn
% Row 0
\SetRowColor{LightBackground}
= & Equal (numerically or padded) \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
\textbackslash{}=, /= & Not equal \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\textgreater{} & Greater than \tn 
% Row Count 3 (+ 1)
% Row 3
\SetRowColor{white}
\textless{} & Less than \tn 
% Row Count 4 (+ 1)
% Row 4
\SetRowColor{LightBackground}
\textless{}\textgreater{}, \textgreater{}\textless{} & Greater than or less than (same as not equal) \tn 
% Row Count 6 (+ 2)
% Row 5
\SetRowColor{white}
\textgreater{}= & Greater than or equal to \tn 
% Row Count 7 (+ 1)
% Row 6
\SetRowColor{LightBackground}
\textless{}= & Less than or equal to \tn 
% Row Count 8 (+ 1)
% Row 7
\SetRowColor{white}
\textbackslash{}\textgreater{} & Not greater than \tn 
% Row Count 9 (+ 1)
% Row 8
\SetRowColor{LightBackground}
\textbackslash{}\textless{} & Not less than \tn 
% Row Count 10 (+ 1)
% Row 9
\SetRowColor{white}
== & Strictly equal (identical) \tn 
% Row Count 11 (+ 1)
% Row 10
\SetRowColor{LightBackground}
\textbackslash{}==, /== & NOT strictly equal \tn 
% Row Count 13 (+ 2)
% Row 11
\SetRowColor{white}
\textgreater{}\textgreater{} & Strictly greater than \tn 
% Row Count 14 (+ 1)
% Row 12
\SetRowColor{LightBackground}
\textless{}\textless{} & Strictly less than \tn 
% Row Count 15 (+ 1)
% Row 13
\SetRowColor{white}
\textgreater{}\textgreater{}= & Strictly greater than or equal to \tn 
% Row Count 16 (+ 1)
% Row 14
\SetRowColor{LightBackground}
\textless{}\textless{}= & Strictly less than or equal to \tn 
% Row Count 17 (+ 1)
% Row 15
\SetRowColor{white}
\textbackslash{}\textgreater{}\textgreater{} & Strictly NOT greater than \tn 
% Row Count 18 (+ 1)
% Row 16
\SetRowColor{LightBackground}
\textbackslash{}\textless{}\textless{} & Strictly NOT less than \tn 
% Row Count 19 (+ 1)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{0.84609 cm} x{4.13091 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Boolean Operators}}  \tn
% Row 0
\SetRowColor{LightBackground}
\& & AND \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
| & Inclusive OR (either is true evaluates to 1) \tn 
% Row Count 3 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\&\& & Exclusive OR (either but not both is true evaluates to 1) \tn 
% Row Count 5 (+ 2)
% Row 3
\SetRowColor{white}
\seqsplit{Prefix} \textbackslash{} & Logical NOT (Negates: 0-\textgreater{}1 and 1-\textgreater{}0 \tn 
% Row Count 7 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{0.89586 cm} x{4.08114 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Concatenation Operators}}  \tn
% Row 0
\SetRowColor{LightBackground}
\seqsplit{(blank)} & Concatenate terms with one blank in between \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
|| & Concatenate without an intervening blank \tn 
% Row Count 4 (+ 2)
% Row 2
\SetRowColor{LightBackground}
\seqsplit{(abuttal)} & Concatenate without an intervening blank \tn 
% Row Count 6 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{You can force concatenation without a blank line by using the || operator. \newline  \newline The {\bf{abuttal}} operator is assumed between two terms that are not separated by another operator. This can occur when two terms are syntactically distinct, such as a literal string and a symbol, or when they are separated only by a comment. \newline  \newline {\bf{Concatenation:}} {\emph{A (Z)}} \newline {\bf{Function Call:}} {\emph{A(Z)}}}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{2.04057 cm} x{2.93643 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Other Operators}}  \tn
% Row 0
\SetRowColor{LightBackground}
/* & Begin Comment \tn 
% Row Count 1 (+ 1)
% Row 1
\SetRowColor{white}
*/ & End Comment \tn 
% Row Count 2 (+ 1)
% Row 2
\SetRowColor{LightBackground}
A-Z, a-z, 0-9, @ \# \$ . ! ? \_ & Valid Symbol Characters \tn 
% Row Count 4 (+ 2)
% Row 3
\SetRowColor{white}
, & Continuation Character \tn 
% Row Count 5 (+ 1)
% Row 4
\SetRowColor{LightBackground}
. & Constant Symbol (at beginning of string) \tn 
% Row Count 7 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\SetRowColor{LightBackground}
\mymulticolumn{2}{x{5.377cm}}{{\bf{Valid Symbols:}}  \newline      {\emph{Fred}} \newline      {\emph{Albert.Hall}} \newline      {\emph{WHERE?}} \newline {\bf{Valid Numbers:}}  \newline      {\emph{12}}  \newline      {\emph{'-17.9'}}  \newline      {\emph{127.0650}}  \newline      {\emph{73e+128}}  \newline      {\emph{' + 7.95E5 '}} \newline  \newline {\bf{Constant example:}} {\emph{.12345}} \newline  \newline Negative numbers in expressions must use quotes. \newline  \newline The continuation character is used to continue a clause onto the next line.}  \tn 
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}

\begin{tabularx}{5.377cm}{x{0.89586 cm} x{4.08114 cm} }
\SetRowColor{DarkBackground}
\mymulticolumn{2}{x{5.377cm}}{\bf\textcolor{white}{Common Commands}}  \tn
% Row 0
\SetRowColor{LightBackground}
DROP & unassigns variable: ex. drop {\emph{variable name}} \tn 
% Row Count 2 (+ 2)
% Row 1
\SetRowColor{white}
EXIT & leaves program unconditionally \tn 
% Row Count 3 (+ 1)
% Row 2
\SetRowColor{LightBackground}
\seqsplit{INTERPRET} & processes instructions that have been built dynamically by evaluating the expression: ex. interpret {\emph{expression}} \tn 
% Row Count 7 (+ 4)
% Row 3
\SetRowColor{white}
LEAVE & causes an immediate exit from one or more repetitive DO loops (anything other than simple DO) \tn 
% Row Count 10 (+ 3)
% Row 4
\SetRowColor{LightBackground}
SAY & writes line to current output stream \tn 
% Row Count 12 (+ 2)
\hhline{>{\arrayrulecolor{DarkBackground}}--}
\end{tabularx}
\par\addvspace{1.3em}


% That's all folks
\end{multicols*}

\end{document}