Cacher is the code snippet organizer for pro developers

\documentclass[10pt,landscape]{article}
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\usepackage{url}
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\usepackage{array,booktabs}
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\usepackage[usenames,dvipsnames,table]{xcolor}
\usepackage[most]{tcolorbox}
\usepackage{tabularx}
\usepackage{multirow}
\usepackage{colortbl}
\usepackage{tikz}
\usepackage{environ}

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\NewEnviron{keys}[1]{
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\begin{document}

\raggedright\

\begin{center}
  \Large{\underline{Cheat Sheet}}
\end{center}

\footnotesize
\begin{multicols}{3}

  \centering\section{Basic}

  \begin{keys}{Glossary}
    Control (Ctrl) key  & \texttt{C} \\
    Alt (Meta) key      & \texttt{M} \\
    Shift key           & \texttt{S} \\
    Command (Super) key & \texttt{CMD} \\
    Function (Fn) key   & \texttt{fn} \\
    Home/end            & \texttt{fn-left / fn-right} \\
  \end{keys}

  \begin{keys}{Basic}
    Execute command by name          & \texttt{M-x} \\
    Cancel command                   & \texttt{C-g} \\
    Exit Emacs                       & \texttt{C-x C-c} \\
    Help: describe a key combination & \texttt{C-h k} \\
    Help: describe a function        & \texttt{C-h f} \\
  \end{keys}

  \begin{keys}{Navigation}
    Previous/next character      & \texttt{C-b / C-f} \\
    Previous/next line           & \texttt{C-p / C-n} \\
    Previous/next word           & \texttt{M-left / M-right} \\
    Previous/next current symbol & \texttt{M-a / M-e} \\
    Previous/next s-expression   & \texttt{C-M-b / C-M-f} \\
    Previous/next defun          & \texttt{C-M-a / C-M-e} \\
    Previous/next page           & \texttt{C-v / M-v} \\
    Beginning/end of line        & \texttt{C-a / C-e} \\
    Beginning/end of file        & \texttt{M-S-, / M-S-.} \\
  \end{keys}

  \begin{keys}{Mark}
    Select region while navigating & Hold Shift \\
    Select next s-expression       & \texttt{M-S-Space} \\
  \end{keys}

  \begin{keys}{Files}
    Find (open) file                  & \texttt{C-x C-f} \\
    Save file                         & \texttt{C-x C-s} \\
    Don't suggest names in minibuffer & \texttt{C-f} \\
    Find recent file                  & \texttt{M-m} \\
    Find file in project              & \texttt{M-i} \\
  \end{keys}
  
  \columnbreak\

  \begin{keys}{Search}
    Search forward, next match         & \texttt{C-s} \\
    Search backward, prev match        & \texttt{C-r} \\
    Occur (show all matches)           & \texttt{M-o} \\
    Grep                               & \texttt{M-x rgrep} \\
    Interactive grep in project (Helm) & \texttt{M-h} \\
    Helm-grep: preview match at point  & \texttt{C-z} \\
  \end{keys}

  \begin{keys}{Replace}
    Interactive replace        & \texttt{M-\%} \\
    Replace current occurrence & \texttt{y} \\
    Skip current occurrence    & \texttt{n} \\
    Replace all occurrences    & \texttt{!} \\
  \end{keys}

  \begin{keys}{Buffers}
    Previous/next buffer & \texttt{C-, / C-.} \\
    Jump to buffer       & \texttt{C-x b / M-m} \\
    List buffers         & \texttt{C-x C-l} \\
    Kill buffer          & \texttt{C-x k} \\
  \end{keys}

  \begin{keys}{Editing}
    Kill current symbol         & \texttt{C-d} \\
    Kill line                   & \texttt{C-k} \\
    Cut to clipboard            & \texttt{C-w / CMD-x} \\
    Copy to clipboard           & \texttt{M-w / CMD-c} \\
    Paste from clipboard        & \texttt{C-y / CMD-v} \\
    Cycle through clipboard     & \texttt{M-y} \\
    Undo                        & \texttt{C-z / CMD-z} \\
    Redo                        & \texttt{M-z / CMD-y} \\
    Indent line                 & \texttt{TAB} \\
    Complete filename in buffer & \texttt{M-/} \\
    Comment or uncomment region & \texttt{M-;} \\
  \end{keys}

  \begin{keys}{Windows}
    Leave one window            & \texttt{C-x 1} \\
    Split window horizontally   & \texttt{C-x 2} \\
    Split window vertically     & \texttt{C-x 3} \\
    Jump cursor to other window & \texttt{C-x o} \\
  \end{keys}

  \begin{keys}{Miscellaneous}
    Ediff                                & \texttt{M-x ediff} \\
    Ediff two opened buffers             & \texttt{C-c d} \\
    Multiple cursors: mark all like this & \texttt{C-x m} \\
  \end{keys}
  
  \columnbreak\
  
  \centering\section{Lisp}

  \begin{keys}{SLIME}
    Connect                           & \texttt{M-x slime-connect} \\
    Switch to next connection         & \texttt{M-x slime-selector n} \\
    Jump to REPL buffer               & \texttt{C-c C-z} \\
    Jump to function definition       & \texttt{M-.} \\
    Jump back from definition         & \texttt{M-,} \\
    Evaluate last s-expression        & \texttt{C-x C-e} \\
    Compile current defun             & \texttt{C-c C-c} \\
    Compile current pattern           & \texttt{C-c C-k} \\
    REPL:\ previous/next history item & \texttt{M-p / M-n} \\
  \end{keys}

  \begin{keys}{Paredit}
    Wrap s-expression                    & \texttt{M-(} \\
    Splice s-expression                  & \texttt{M-s} \\
    Splice s-expression killing backward & \texttt{M-up} \\
    Raise s-expression                   & \texttt{M-r} \\
    Kill s-expression                    & \texttt{C-M-k} \\
    Kill balanced to the end of line     & \texttt{C-k} \\
    Split s-expression                   & \texttt{M-S-s} \\
    Barf/slurp forward                   & \texttt{C-left / C-right} \\
  \end{keys}

  \centering\section{Version control}

  \begin{keys}{Magit status}
    Magit status                      & \texttt{C-x g} \\
    Move up/down                      & \texttt{p / n} \\
    Change current section visibility & \texttt{1 / 2 / 4} \\
    Change all sections visibility    & \texttt{M-1 / M-2 / M-4} \\
    Collapse or expand section        & \texttt{TAB} \\
    Stage file or chunk               & \texttt{s} \\
    Unstage file or chunk             & \texttt{u} \\
    Discard uncommited file or chunk  & \texttt{k} \\
    Commit staged                     & \texttt{c c} \\
    Commit mode: confirm commit       & \texttt{C-c C-c} \\
    Commit mode: cancel commit        & \texttt{C-c C-a} \\
    Pull into current branch          & \texttt{F F} \\
    Push current branch               & \texttt{P P} \\
    Merge into current branch         & \texttt{m m} \\
    Show process buffer               & \texttt{\$} \\
    Quit                              & \texttt{q} \\
  \end{keys}

\end{multicols}

\end{document}