\documentclass[a4paper,8pt]{extarticle}

\usepackage{textcomp}
\usepackage{fullpage}
\usepackage{boxedminipage}
\usepackage{multicol}
\usepackage[a4paper,left=0.8cm,right=0.8cm,top=1.5cm,bottom=2cm]{geometry}
\pagestyle{empty}

\marginparwidth = 10pt

\usepackage[T1]{fontenc}
\newcommand{\changefont}[3]{
\fontfamily{#1} \fontseries{#2} \fontshape{#3} \selectfont}

\newcommand{\docheading}{\Huge\centering{Alchemist Quick Reference Card [Spacemacs Version]}\normalsize\bigskip}
\newcommand{\helpgroup}[1]{\par\noindent\centering{\textbf{\large#1}\medskip}}
\newcommand{\helpkey}[2]{\par~~\noindent\textbf{#1}\hfill{#2}~~}
\newcommand{\group}[1]{\bigskip\par\noindent\textbf{\large#1}\bigskip}
\newcommand{\subgroup}[1]{\medskip\par\noindent\textbf{#1}\medskip}
\newcommand{\key}[2]{\par\noindent\textbf{#1}\hfill{#2}}
\newcommand{\meta}[1]{\textlangle{#1}\textrangle}

\begin{document}

\changefont{pag}{m}{n}

\renewcommand{\baselinestretch}{1.2}

\docheading

\bigskip

\begin{boxedminipage}[t]{11cm}

\medskip

\helpgroup{Getting help in Emacs}

\helpkey{SPC h d f}{describe a function}
\helpkey{SPC h d v}{describe a variable}
\helpkey{SPC h d k}{describe a key}
\helpkey{SPC h d m}{describe current modes}
\helpkey{SPC h d p}{describe a package}
\helpkey{SPC h m}{search available man pages}

\medskip

\end{boxedminipage}

\setlength{\bigskipamount}{1cm}

\bigskip
\bigskip

\setlength{\columnsep}{1cm}

\begin{multicols}{2}

\group{Mix}

\key{SPC m m :}{alchemist-mix}
\key{SPC m t a}{alchemist-mix-test}
\key{SPC m m c}{alchemist-mix-compile}
\key{SPC m t f}{alchemist-mix-test-file}
\key{SPC m t b}{alchemist-mix-test-this-buffer}
\key{SPC m t t}{alchemist-mix-test-at-point}

\group{Compilation}

\key{SPC m c :}{alchemist-compile}
\key{SPC m c f}{alchemist-compile-file}
\key{SPC m c b}{alchemist-compile-this-buffer}

\group{Execution}

\key{SPC m x :}{alchemist-execute}
\key{SPC m x f}{alchemist-execute-file}
\key{SPC m x b}{alchemist-execute-this-buffer}

\group{IEx}

\key{SPC m s i}{alchemist-iex-run}
\key{SPC m s I}{alchemist-iex-project-run}
\key{SPC m s l}{alchemist-iex-send-current-line}
\key{SPC m s L}{alchemist-iex-send-current-line-and-go}
\key{SPC m s r}{alchemist-iex-send-region}
\key{SPC m s R}{alchemist-iex-send-region-and-go}
\key{SPC m s c}{alchemist-iex-compile-this-buffer}

\group{Documentation Lookup}

\key{SPC m h :}{alchemist-help}
\key{SPC m h H}{alchemist-help-history}
\key{SPC m h h}{alchemist-help-search-at-point}
\key{SPC m h r}{alchemist-help-search-marked-region}

\group{Project}

\key{SPC m p t}{alchemist-project-find-test}
\key{SPC m g t}{alchemist-project-toggle-file-and-tests}
\key{SPC m g T}{alchemist-project-toggle-file-and-tests-other-window}

\group{Eval}

\key{SPC m e l}{alchemist-eval-current-line}
\key{SPC m e L}{alchemist-eval-print-current-line}
\key{SPC m e j}{alchemist-eval-quoted-current-line}
\key{SPC m e J}{alchemist-eval-print-quoted-current-line}
\key{SPC m e r}{alchemist-eval-region}
\key{SPC m e R}{alchemist-eval-print-region}
\key{SPC m e u}{alchemist-eval-quoted-region}
\key{SPC m e U}{alchemist-eval-print-quoted-region}
\key{SPC m e b}{alchemist-eval-buffer}
\key{SPC m e B}{alchemist-eval-print-buffer}
\key{SPC m e v}{alchemist-eval-quoted-buffer}
\key{SPC m e V}{alchemist-eval-print-quoted-buffer}

\group{Definition Lookup}

\key{SPC m g g}{alchemist-goto-definition-at-point}
\key{SPC m ,}{alchemist-goto-jump-back}

\end{multicols}

\end{document}