\documentclass[11pt]{article}
\usepackage{typearea}
\usepackage{dbicons} % database icons etc
\usepackage{amssymb} % subsetneq
\usepackage{latexsym}
\usepackage{pstricks}

\parindent 0cm
\begin{document}

\pagestyle{empty}
\areaset{18cm}{28cm}

\begin{center}
  \Huge\bf  Shared Exam Sheet:  \\
   NAME     DATE
\end{center}

{\red red: notes by examiner }
  

\verb|$ .... $| ~~  math environment 

$ %%% Symbols for SemWeb
  \verb|\forall| ~~~ \forall ~~,~~  
  \verb|\exists| ~~~ \exists ~~,~~  
  \verb|\sqcap| ~~~ \sqcap ~~,~~  %% intersect
  \verb|\sqcup| ~~~ \sqcup ~~.~~  %% union
  \verb|\sqsubseteq| ~~~  \sqsubseteq  $
\smallskip

\hrule
\vskip1cm

%%%%%%%% edit below %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% press ctrl-s or [Recompile] button for immediate recompile
% shareltx doesn't mouse-copy. use crtl-c ctrl v as in windows

example for math: $ \forall x: p(x) \to q(x)$

\begin{verbatim}
% in verbatim -> print unchanged -- use for any kind of code

select *
from country 

\end{verbatim}

\end{document}
